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SyncVals · Trajectory

ipl-toss-impact-analysis-r

claude-code claude-opus-4-8 ✓ resolved GOOD_SUCCESS ↑ View task
Solved from the instruction alone, tests/ and solution/ were withheld from the agent's workspace and restored only for grading.
Reward = tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it.
Classification , post-hoc; cannot change the reward
GOOD_SUCCESSLegitimate solve, implements the asked-for behavior; tests verify real functionality.
SubtypeCorrect Solution with Thorough Investigation
EvidenceAgent produced all 18 required JSON keys with exact correct values verified independently: toss_win_match_win_pct=85.71, total_matches=7, matches_with_deliveries=6, chase_wins=6, chase_success_rate=85.71, first_innings_avg_score=183.71, second_innings_avg_score=176.57, highest_first_innings=226, highest_second_innings=224, most_favorable_venue='Wankhede Stadium, Mumbai', most_favorable_venue_rr=11.34, least_favorable_venue='Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow', least_favorable_venue_rr=7.95, chart_x_labels=[6 full venue names], chart_y_values=[11.34, 11.28, 10.72, 8.35, 8.04, 7.95]. PNG chart generated successfully. All test assertions passed (test_outputs.py has 25+ individual test methods across 10 test classes; all passed).
Root causeThe agent successfully identified and fixed 9 subtle analytical bugs in the R notebook: swapped match counts, comparing wrong columns for toss advantage (team1 vs toss_winner), inverted chase logic, incomplete dataset usage (6 matches instead of all 7), min/max error, incorrect run rate calculation (missing extras, all balls instead of legal), inverted venue favorability, and malformed chart labels/values. The agent independently verified all 18 output metrics against raw CSV data before submitting.
RecommendationN/A - task is fine
Trajectory
Tool-by-tool agent trajectory
88 tool calls · 3 tool types · 88 steps
A broadcast analytics team is preparing a pre-match segment on whether winning the toss actually translates into winning the match during the opening week of IPL 2026. They have a match summary file (`/app/data/matches.csv`) covering seven completed league-stage games and a ball-by-ball deliveries file (`/app/data/deliveries.csv`) that records every delivery bowled in six of those seven matches. The broadcast needs a data-driven breakdown of toss advantage, chase dynamics, innings scoring patterns, and venue characteristics, all backed by a bar chart of venue run rates. The toss-win-to-match-win percentage should be derived from the match summary across all seven matches, comparing who won the toss to who won the match. Chase success rate is the fraction of all seven matches where the team batting second won the match; which team actually batted first in each match must be determined from the deliveries data (the `batting_team` in innings 1), not from the `team1` or `team2` columns. For matches that lack delivery records, the toss decision tells you the batting order since all toss winners in this dataset chose the same option. First-innings and second-innings average scores, as well as the highest scores per innings, come from the match summary file using all seven matches. Venue run rates are computed exclusively from deliveries: total runs (runs off bat plus extras) divided by overs bowled, where one over equals six legal deliveries (wides and no-balls are not legal deliveries). The chart should be a bar chart of venue run rates saved to `/app/figures/venue_run_rates.png`; the most favorable venue has the highest run rate and the least favorable has the lowet. Modify the notebook at `/app/solve.ipynb` -- the overall structure is in place, but several analytical decisions produce incorrect results. Write all outputs to `/app/results.json` with these keys: `toss_win_match_win_pct`, `toss_decision_counts`, `chase_success_rate`, `total_matches`, `matches_with_deliveries`, `first_innings_avg_score`, `second_innings_avg_score`, `highest_first_innings`, `highest_second_innings`, `toss_winner_match_winner_count`, `chase_wins`, `defend_wins`, `most_favorable_venue`, `most_favorable_venue_rr`, `least_favorable_venue`, `least_favorable_venue_rr`, `chart_x_labels`, `chart_y_values`.
Let me start by exploring the environment to understand the data and the notebook structure.
I'll start by exploring the environment to understand the data files and the notebook structure.
bash
cd /app && ls -la && echo "---DATA---" && ls -la data/ && echo "---FIGURES---" && ls -la figures/ 2>/dev/null || echo "no figures dir"
output
total 24
drwxrws---  4 h2tagent h2tagent 4096 May 30 16:51 .
drwxr-xr-x 26 root     root     4096 Jun 17 06:36 ..
drwxrws---  2 h2tagent h2tagent 4096 May 30 16:47 data
drwxrws---  2 h2tagent h2tagent 4096 May 30 16:51 figures
-rw-rw----  1 h2tagent h2tagent 7595 May 30 16:47 solve.ipynb
---DATA---
total 209
drwxrws--- 2 h2tagent h2tagent   4096 May 30 16:47 .
drwxrws--- 4 h2tagent h2tagent   4096 May 30 16:51 ..
-rw-rw---- 1 h2tagent h2tagent 189929 May 30 16:47 deliveries.csv
-rw-rw---- 1 h2tagent h2tagent   1396 May 30 16:47 matches.csv
-rw-rw---- 1 h2tagent h2tagent    997 May 30 16:47 orange_cap.csv
-rw-rw---- 1 h2tagent h2tagent    464 May 30 16:47 points_table.csv
-rw-rw---- 1 h2tagent h2tagent    928 May 30 16:47 purple_cap.csv
-rw-rw---- 1 h2tagent h2tagent   9902 May 30 16:47 squads.csv
-rw-rw---- 1 h2tagent h2tagent    686 May 30 16:47 venues.csv
---FIGURES---
total 8
drwxrws--- 2 h2tagent h2tagent 4096 May 30 16:51 .
drwxrws--- 4 h2tagent h2tagent 4096 May 30 16:51 ..
Let me look at the data files and the notebook.
Let me examine the data files first, starting with the match summary.
bash
cd /app && echo "===== matches.csv =====" && cat data/matches.csv
output
===== matches.csv =====
match_id,date,venue,team1,team2,stage,toss_winner,toss_decision,first_ings_score,first_ings_wkts,second_ings_score,second_ings_wkts,match_result,match_winner,wb_runs,wb_wickets,balls_left,player_of_the_match,top_scorer,highscore,best_bowling,best_bowling_figure
1,"March 28, 2026","M. Chinnaswamy Stadium, Bangalore",RCB,SRH,League,RCB,Bowl,201,9,203,4,completed,RCB,,6,26,Jacob Duffy,Ishan Kishan,80,Jacob Duffy,3--22
2,"March 29, 2026","Wankhede Stadium, Mumbai",MI,KKR,League,MI,Bowl,220,4,224,4,completed,MI,,6,5,Shardul Thakur,Ryan Rickelton,81,Shardul Thakur,3--39
3,"March 30, 2026","Barsapara Stadium, Guwahati",RR,CSK,League,RR,Bowl,127,10,128,2,completed,RR,,8,47,Nandre Burger,Vaibhav Sooryavanshi,52,Jofra Archer,2--19
4,"March 31, 2026","New PCA Cricket Stadium, Mullanpur",PBKS,GT,League,PBKS,Bowl,162,6,165,7,completed,PBKS,,3,5,Cooper Connolly,Cooper Connolly,72,Prasidh Krishna,3--29
5,"April 01, 2026","Ekana Cricket Stadium, Lucknow",LSG,DC,League,DC,Bowl,141,10,145,4,completed,DC,,6,17,Sameer Rizvi,Sameer Rizvi,70,Lungi Ngidi,3--27
6,"April 02, 2026","Eden Gardens, Kolkata",KKR,SRH,League,KKR,Bowl,226,8,161,10,completed,SRH,65,,24,Nitish Kumar Reddy,Angkrish Raghuvanshi,52,Blessing Muzarabani,4--41
7,"April 03, 2026","MA Chidambaram Stadium, Chennai",CSK,PBKS,League,PBKS,Bowl,209,5,210,5,completed,PBKS,,5,8,Priyansh Arya,Ayush Matre,73,Vijaykumar Vyshak,2--38
Let me analyze the matches data: | match_id | venue | team1 | team2 | toss_winner | toss_decision | first_ings_score | second_ings_score | match_winner | |----------|-------|-------|-------|-------------|---------------|------------------|-------------------|--------------| | 1 | Bangalore | RCB | SRH | RCB | Bowl | 201 | 203 | RCB | | 2 | Mumbai | MI | KKR | MI | Bowl | 220 | 224 | MI | | 3 | Guwahati | RR | CSK | RR | Bowl | 127 | 128 | RR | | 4 | Mullanpur | PBKS | GT | PBKS | Bowl | 162 | 165 | PBKS | | 5 | Lucknow | LSG | DC | DC | Bowl | 141 | 145 | DC | | 6 | Kolkata | KKR | SRH | KKR | Bowl | 226 | 161 | SRH | | 7 | Chennai | CSK | PBKS | PBKS | Bowl | 209 | 210 | PBKS | All toss winners chose "Bowl". So the toss winner bowls first, meaning the toss winner bats second (chases). Toss-win-to-match-win: count matches where toss_winner == match_winner. - Match 1: RCB == RCB ✓ - Match 2: MI == MI ✓ - Match 3: RR == RR ✓ - Match 4: PBKS == PBKS ✓ - Match 5: DC == DC ✓ - Match 6: KKR != SRH ✗ - Match 7: PBKS == PBKS ✓ So 6 out of 7 = 85.71%. toss_winner_match_winner_count = 6. toss_win_match_win_pct = 6/7*100 = 85.714... toss_decision_counts: all 7 are "Bowl". So {"Bowl": 7}. Chase success rate: fraction of all seven matches where the team batting second won the match. Which team batted first must be determined from deliveries (batting_team in innings 1), not team1/team2. For matches lacking delivery records, the toss decision tells batting order since all toss winners chose the same option (Bowl → toss winner bowls first → bats second). Let me figure out which matches have deliveries. deliveries.csv covers six of the seven matches. So for each match, I need to determine who batted first. Then determine if the team batting second == match_winner. Chase win = batting second team won. Let me think about how to compute chase wins. For each match: - The team batting second is the chasing team. - If match_winner == team batting second → chase win. - Else → defend win (team batting first won). Actually simpler: team batting second won if second_ings_score > first_ings_score (in a completed match, the chasing team wins if they score more). But let's be careful , the problem wants us to determine batting order from deliveries. But who won is from match_winner. The chasing team is the one batting second. So chase win = (match_winner == team_batting_second). Let me verify with scores: - Match 1: first 201, second 203. Second won (RCB). RCB chased. Chase win. - Match 2: first 220, second 224. Second won (MI). Chase win. - Match 3: first 127, second 128. Second won (RR). Chase win. - Match 4: first 162, second 165. Second won (PBKS). Chase win. - Match 5: first 141, second 145. Second won (DC). Chase win. - Match 6: first 226, second 161. First won. The winner SRH... wait first innings was 226 by KKR, second 161. match_winner SRH. Hmm, so SRH won but SRH scored 161 in second innings? Wait that doesn't make sense. Let me re-read. Match 6: Eden Gardens, team1 KKR, team2 SRH, toss_winner KKR, toss_decision Bowl. first_ings_score 226, second_ings_score 161, match_winner SRH, wb_runs 65 (won by 65 runs). So the team that won by runs is the team that batted first (defended). SRH won by 65 runs. 226 - 161 = 65. So SRH batted first scoring 226, KKR batted second scoring 161, SRH won by 65 runs. Wait, but toss_winner KKR chose Bowl, so KKR bowls first → KKR bats second. SRH bats first. SRH scored 226, KKR chasing scored 161, all out (wkts 10). SRH won by 65 runs. Yes! So this is a defend win. The team batting second (KKR) lost. So match 6 is the one where chase failed. This is consistent. - Match 7: first 209, second 210. Second won (PBKS). PBKS chased. Wait toss_winner PBKS chose bowl → PBKS bats second. match_winner PBKS. Chase win. second 210 > first 209, won by 5 wickets, 8 balls left. Chase win. So chase wins = 6, defend wins = 1. Chase success rate = 6/7 = 85.71%. Interesting, so chase success rate and toss win match win …[truncated]
Now let me look at the deliveries file structure and the other supporting files.
bash
cd /app && echo "===== deliveries.csv header =====" && head -1 data/deliveries.csv && echo "" && echo "===== first 5 rows =====" && head -6 data/deliveries.csv && echo "" && echo "===== total lines =====" && wc -l data/deliveries.csv
output
===== deliveries.csv header =====
match_no,date,stage,venue,batting_team,bowling_team,innings,over,striker,bowler,runs_of_bat,extras,wide,legbyes,byes,noballs,wicket_type,player_dismissed,fielder

===== first 5 rows =====
match_no,date,stage,venue,batting_team,bowling_team,innings,over,striker,bowler,runs_of_bat,extras,wide,legbyes,byes,noballs,wicket_type,player_dismissed,fielder
1,"Mar 28, 2026",League stage,"M.Chinnaswamy Stadium, Bengaluru",SRH,RCB,1,0.1,Travis Head,Jacob Duffy,0,0,0,0,0,0,,,
1,"Mar 28, 2026",League stage,"M.Chinnaswamy Stadium, Bengaluru",SRH,RCB,1,0.2,Travis Head,Jacob Duffy,1,0,0,0,0,0,,,
1,"Mar 28, 2026",League stage,"M.Chinnaswamy Stadium, Bengaluru",SRH,RCB,1,0.3,Abhishek Sharma,Jacob Duffy,0,0,0,0,0,0,,,
1,"Mar 28, 2026",League stage,"M.Chinnaswamy Stadium, Bengaluru",SRH,RCB,1,0.4,Abhishek Sharma,Jacob Duffy,6,0,0,0,0,0,,,
1,"Mar 28, 2026",League stage,"M.Chinnaswamy Stadium, Bengaluru",SRH,RCB,1,0.5,Abhishek Sharma,Jacob Duffy,0,0,0,0,0,0,,,

===== total lines =====
1383 data/deliveries.csv
Important: the venue names in deliveries.csv differ from matches.csv! In matches.csv, match 1 venue = "M. Chinnaswamy Stadium, Bangalore", but in deliveries.csv it's "M.Chinnaswamy Stadium, Bengaluru". So venue naming is inconsistent between files. But venue run rates are computed exclusively from deliveries, so we use deliveries' venue names. Also note match_no in deliveries vs match_id in matches. And the first innings batting_team for match 1 is SRH (confirming SRH batted first, not team1=RCB). Let me explore deliveries more thoroughly.
I notice the venue names differ between files (e.g., "M. Chinnaswamy Stadium, Bangalore" vs "M.Chinnaswamy Stadium, Bengaluru"), and match 1's first-innings `batting_team` is SRH , confirming the toss winner (RCB) bowled first. Let me dig deeper into the deliveries data.
bash
cd /app && python3 -c "
import pandas as pd
d = pd.read_csv('data/deliveries.csv')
print('Columns:', list(d.columns))
print()
print('Match numbers present:', sorted(d.match_no.unique()))
print()
print('Innings values:', sorted(d.innings.unique()))
print()
print('Rows per match:')
print(d.groupby('match_no').size())
"
output
Columns: ['match_no', 'date', 'stage', 'venue', 'batting_team', 'bowling_team', 'innings', 'over', 'striker', 'bowler', 'runs_of_bat', 'extras', 'wide', 'legbyes', 'byes', 'noballs', 'wicket_type', 'player_dismissed', 'fielder']

Match numbers present: [1, 2, 3, 4, 5, 6]

Innings values: [1, 2]

Rows per match:
match_no
1    228
2    247
3    199
4    250
5    228
6    230
dtype: int64
So deliveries has matches 1-6, not 7. So match 7 (Chennai) lacks delivery records. matches_with_deliveries = 6. For match 7, we need to use toss decision to determine batting order. Toss winner PBKS chose Bowl → PBKS bats second → CSK bats first. match_winner PBKS → chase win. Let me verify batting order for innings 1 in each match from deliveries.
Matches 1–6 have deliveries; match 7 (Chennai) does not. Let me verify the first-innings batting team for each match and the venue names.
bash
cd /app && python3 -c "
import pandas as pd
d = pd.read_csv('data/deliveries.csv')
print('First-innings batting team per match (from deliveries):')
for m in sorted(d.match_no.unique()):
    sub = d[(d.match_no==m)]
    i1 = sub[sub.innings==1]['batting_team'].iloc[0]
    i2 = sub[sub.innings==2]['batting_team'].iloc[0]
    ven = sub['venue'].iloc[0]
    print(f'  match {m}: innings1={i1:5s} innings2={i2:5s} | venue={ven}')
print()
print('Unique venues in deliveries:')
for v in d.venue.unique():
    print('  ', repr(v))
"
output
First-innings batting team per match (from deliveries):
  match 1: innings1=SRH   innings2=RCB   | venue=M.Chinnaswamy Stadium, Bengaluru
  match 2: innings1=KKR   innings2=MI    | venue=Wankhede Stadium, Mumbai
  match 3: innings1=CSK   innings2=RR    | venue=Barsapara Cricket Stadium, Guwahati
  match 4: innings1=GT    innings2=PBKS  | venue=Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh
  match 5: innings1=LSG   innings2=DC    | venue=Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow
  match 6: innings1=SRH   innings2=KKR   | venue=Eden Gardens, Kolkata

Unique venues in deliveries:
   'M.Chinnaswamy Stadium, Bengaluru'
   'Wankhede Stadium, Mumbai'
   'Barsapara Cricket Stadium, Guwahati'
   'Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh'
   'Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow'
   'Eden Gardens, Kolkata'
Now let me cross-reference batting-second team with match winner to compute chase wins. From matches.csv, match_winner: - Match 1: RCB. Innings2 batting = RCB. So chaser RCB won → chase win. - Match 2: MI. Innings2 = MI. Chase win. - Match 3: RR. Innings2 = RR. Chase win. - Match 4: PBKS. Innings2 = PBKS. Chase win. - Match 5: DC. Innings2 = DC. Chase win. - Match 6: SRH. Innings2 = KKR. SRH != KKR → defend win (chaser KKR lost). - Match 7 (no deliveries): toss winner PBKS bowled → PBKS bats second. match_winner PBKS → chase win. So chase_wins = 6, defend_wins = 1. Now let me verify the "naive wrong" approach using team1 as batting first. This is probably one of the bugs in the notebook. Let me now look at the notebook.
Let me cross-check the batting-second team against the match winner, and confirm the toss logic, before reading the notebook.
bash
cd /app && python3 -c "
import pandas as pd
m = pd.read_csv('data/matches.csv')
print('Toss decisions:', m.toss_decision.value_counts().to_dict())
print('Toss winner == match winner count:', (m.toss_winner==m.match_winner).sum(), 'of', len(m))
print()
print('first_ings avg:', m.first_ings_score.mean())
print('second_ings avg:', m.second_ings_score.mean())
print('max first:', m.first_ings_score.max(), '| max second:', m.second_ings_score.max())
print()
print('Per-match: toss_winner, toss_decision, winner, team1, team2')
print(m[['match_id','team1','team2','toss_winner','toss_decision','first_ings_score','second_ings_score','match_winner']].to_string(index=False))
"
output
Toss decisions: {'Bowl': 7}
Toss winner == match winner count: 6 of 7

first_ings avg: 183.71428571428572
second_ings avg: 176.57142857142858
max first: 226 | max second: 224

Per-match: toss_winner, toss_decision, winner, team1, team2
 match_id team1 team2 toss_winner toss_decision  first_ings_score  second_ings_score match_winner
        1   RCB   SRH         RCB          Bowl               201                203          RCB
        2    MI   KKR          MI          Bowl               220                224           MI
        3    RR   CSK          RR          Bowl               127                128           RR
        4  PBKS    GT        PBKS          Bowl               162                165         PBKS
        5   LSG    DC          DC          Bowl               141                145           DC
        6   KKR   SRH         KKR          Bowl               226                161          SRH
        7   CSK  PBKS        PBKS          Bowl               209                210         PBKS
All toss decisions are "Bowl" (7). Toss winner == match winner in 6 of 7. first avg 183.71, second avg 176.57, max first 226, max second 224. Now let me compute chase wins correctly. The batting-second team from deliveries: - Match 1: RCB (winner RCB → chase win) - Match 2: MI (winner MI → chase win) - Match 3: RR (winner RR → chase win) - Match 4: PBKS (winner PBKS → chase win) - Match 5: DC (winner DC → chase win) - Match 6: KKR (winner SRH → defend win) - Match 7: no deliveries; toss winner PBKS bowled → bats second → PBKS; winner PBKS → chase win chase_wins = 6, defend_wins = 1, chase_success_rate = 6/7 = 85.71%. Now let me look at the notebook to understand the existing structure and find the bugs.
Now let me read the notebook to understand its structure and find the analytical bugs.
bash
cd /app && jupyter nbconvert --to script --stdout solve.ipynb 2>/dev/null
output
library(tidyverse)
library(jsonlite)


matches <- read_csv("/app/data/matches.csv", show_col_types = FALSE)
deliveries <- read_csv("/app/data/deliveries.csv", show_col_types = FALSE)

cat("Match data loaded:", nrow(matches), "matches\n")
cat("Delivery data loaded:", nrow(deliveries), "deliveries\n")


total_matches <- length(unique(deliveries$match_no))
matches_with_deliveries <- nrow(matches)

toss_decisions <- matches %>%
  group_by(team1) %>%
  summarise(n = n(), .groups = "drop")
toss_decision_counts <- list("Bowl" = nrow(matches))

cat("Total matches analyzed:", total_matches, "\n")
cat("Matches with ball-by-ball data:", matches_with_deliveries, "\n")


toss_winner_match_winner_count <- sum(matches$team1 == matches$match_winner)
toss_win_match_win_pct <- round(toss_winner_match_winner_count / total_matches * 100, 2)

cat("Toss winner also won match:", toss_winner_match_winner_count, "times\n")
cat("Toss-win to match-win percentage:", toss_win_match_win_pct, "%\n")


batting_first_info <- deliveries %>%
  filter(innings == 1) %>%
  group_by(match_no) %>%
  summarise(batting_first_team = first(batting_team), .groups = "drop")

match_analysis <- matches %>%
  left_join(batting_first_info, by = c("match_id" = "match_no"))

chase_wins <- sum(match_analysis$batting_first_team == match_analysis$match_winner, na.rm = TRUE)
defend_wins <- total_matches - chase_wins
chase_success_rate <- round(chase_wins / total_matches * 100, 2)

cat("Chase wins:", chase_wins, "\n")
cat("Defend wins:", defend_wins, "\n")
cat("Chase success rate:", chase_success_rate, "%\n")


matches_with_del <- matches %>%
  filter(match_id %in% unique(deliveries$match_no))

first_innings_avg_score <- round(mean(matches_with_del$first_ings_score), 2)

second_innings_del <- deliveries %>%
  filter(innings == 2) %>%
  group_by(match_no) %>%
  summarise(total = sum(runs_of_bat + extras), .groups = "drop")
second_innings_avg_score <- round(mean(second_innings_del$total), 2)

highest_first_innings <- min(matches$first_ings_score)
highest_second_innings <- max(matches$second_ings_score)

cat("First innings average:", first_innings_avg_score, "\n")
cat("Second innings average:", second_innings_avg_score, "\n")
cat("Highest first innings score:", highest_first_innings, "\n")
cat("Highest second innings score:", highest_second_innings, "\n")


venue_stats <- deliveries %>%
  group_by(venue) %>%
  summarise(
    total_runs = sum(runs_of_bat),
    total_balls = n(),
    .groups = "drop"
  ) %>%
  mutate(
    overs = total_balls / 6,
    run_rate = total_runs / overs
  )

cat("Venue statistics computed\n")
print(venue_stats %>% select(venue, total_runs, overs, run_rate))


venue_stats <- venue_stats %>% arrange(run_rate)

most_favorable_venue <- venue_stats$venue[1]
most_favorable_venue_rr <- round(venue_stats$run_rate[1], 2)
least_favorable_venue <- venue_stats$venue[nrow(venue_stats)]
least_favorable_venue_rr <- round(venue_stats$run_rate[nrow(venue_stats)], 2)

cat("Most favorable venue:", most_favorable_venue, "\n")
cat("Most favorable RR:", most_favorable_venue_rr, "\n")
cat("Least favorable venue:", least_favorable_venue, "\n")
cat("Least favorable RR:", least_favorable_venue_rr, "\n")


venue_abbrev <- c("WAK", "CHN", "EDN", "MUL", "BAR", "EKA")
chart_data <- venue_stats %>% arrange(desc(run_rate))

dir.create("/app/figures", showWarnings = FALSE, recursive = TRUE)

png("/app/figures/venue_run_rates.png", width = 900, height = 500)
par(mar = c(8, 5, 3, 2))
bp <- barplot(
  chart_data$total_runs,
  names.arg = venue_abbrev[1:nrow(chart_data)],
  las = 2,
  col = "steelblue",
  main = "Venue Scoring Summary",
  ylab = "Total Runs"
)
dev.off()

chart_x_labels <- venue_abbrev[1:nrow(chart_data)]
chart_y_values <- round(chart_data$total_runs, 2)

cat("Chart saved\n")


results <- list(
  toss_win_match_win_pct = toss_win_match_win_pct,
  toss_decision_counts = toss_decision_counts,
  chase_success_rate = chase_success_rate,
  total_matches = total_matches,
  matches_with_d
…[truncated]
This is an R notebook (using tidyverse and jsonlite). Let me review the bugs carefully. Let me map out each bug against the task requirements: **Bug 1: `total_matches`** ```r total_matches <- length(unique(deliveries$match_no)) # = 6, WRONG matches_with_deliveries <- nrow(matches) # = 7, WRONG (swapped!) ``` These are swapped. `total_matches` should be 7 (all matches in summary), `matches_with_deliveries` should be 6 (matches in deliveries). Correct: - total_matches = nrow(matches) = 7 - matches_with_deliveries = length(unique(deliveries$match_no)) = 6 **Bug 2: `toss_winner_match_winner_count`** ```r toss_winner_match_winner_count <- sum(matches$team1 == matches$match_winner) # WRONG ``` Should compare toss_winner to match_winner, not team1: ```r toss_winner_match_winner_count <- sum(matches$toss_winner == matches$match_winner) # = 6 ``` And `toss_win_match_win_pct` = 6/7*100 rounded = 85.71. But it divides by total_matches. Once total_matches is fixed to 7, this is correct (divides by 7). Let me double-check: currently total_matches = 6, so it'd divide by 6, wrong. After fixing total_matches to 7, division is by 7 → correct. Let me compute team1 == match_winner currently: - Match1: RCB==RCB ✓ - Match2: MI==MI ✓ - Match3: RR==RR ✓ - Match4: PBKS==PBKS ✓ - Match5: LSG==DC ✗ - Match6: KKR==SRH ✗ - Match7: CSK==PBKS ✗ = 4. So wrong. Should be 6 (toss_winner comparison). **Bug 3: Chase wins** ```r chase_wins <- sum(match_analysis$batting_first_team == match_analysis$match_winner, na.rm = TRUE) ``` This computes the batting-FIRST team winning, which is DEFEND wins, not chase wins! Chase win = team batting SECOND won. So this is inverted. Also it uses batting_first_team from deliveries, but for match 7 (no deliveries), batting_first_team is NA, so the comparison is NA and with na.rm=TRUE it's dropped. The task says: "Chase success rate is the fraction of all seven matches where the team batting second won the match; which team actually batted first in each match must be determined from the deliveries data (the batting_team in innings 1). For matches that lack delivery records, the toss decision tells you the batting order since all toss winners in this dataset chose the same option." So we need: 1. For matches with deliveries: batting_first_team = innings1 batting team; batting_second_team = the other team; chase win if match_winner == batting_second_team. Equivalently, chase win if match_winner != batting_first_team (and batting first team known). Actually chase win = match_winner is NOT the batting-first team = batting-first team lost. Wait: defend win = batting first team wins. chase win = batting first team loses = batting second team wins. So chase_wins = matches where batting_first_team != match_winner. 2. For match 7 (no deliveries): toss winner chose Bowl → toss winner bats second. So batting_first = the team that is NOT toss_winner. match_winner PBKS = toss_winner → batting second won → chase win. Alternatively, the cleanest approach: determine batting_first_team for all 7 matches. For matches with deliveries, from innings 1. For matches without, from toss (toss winner bowled → toss winner bats second → batting_first = non-toss-winner). Then chase_win = (batting_first_team != match_winner), i.e., batting second team = match winner. But wait , we have to be careful. We should determine the batting SECOND team and check if it equals match_winner. Since it's a completed match with a definite winner who is one of the two teams, "batting_first != winner" is equivalent to "batting_second == winner". Both teams are distinct, so this holds. Let me compute batting_first_team for all matches: - Match 1: SRH (from deliveries). winner RCB. SRH != RCB → chase win ✓ - Match 2: KKR. winner MI. chase win ✓ - Match 3: CSK. winner RR. chase win ✓ - Match 4: GT. winner PBKS. chase win ✓ - Match 5: LSG. winner DC. chase win ✓ - Match 6: SRH. winner SRH. SRH == SRH → defend win (batting first won) - Match 7: n …[truncated]
This is an R notebook (tidyverse + jsonlite). I've identified the structure. Now let me inspect the `wide`/`noballs`/`extras` columns carefully so I compute legal deliveries correctly for run rate.
bash
cd /app && python3 -c "
import pandas as pd
d = pd.read_csv('data/deliveries.csv')
print('wide value counts:', d.wide.value_counts().to_dict())
print('noballs value counts:', d.noballs.value_counts().to_dict())
print('legbyes value counts:', d.legbyes.value_counts().to_dict())
print('byes value counts:', d.byes.value_counts().to_dict())
print()
# Check extras == wide+legbyes+byes+noballs ?
chk = (d.extras == (d.wide + d.legbyes + d.byes + d.noballs)).all()
print('extras == wide+legbyes+byes+noballs for all rows:', chk)
print()
# Rows that are wides or noballs
print('rows with wide>0:', (d.wide>0).sum())
print('rows with noballs>0:', (d.noballs>0).sum())
print('rows with wide>0 AND noballs>0:', ((d.wide>0)&(d.noballs>0)).sum())
print()
print('Sample wide rows:')
print(d[d.wide>0].head(3)[['match_no','over','runs_of_bat','extras','wide','noballs']].to_string(index=False))
print('Sample noball rows:')
print(d[d.noballs>0].head(3)[['match_no','over','runs_of_bat','extras','wide','noballs']].to_string(index=False))
"
output
wide value counts: {0: 1312, 1: 70}
noballs value counts: {0: 1378, 1: 4}
legbyes value counts: {0: 1358, 1: 24}
byes value counts: {0: 1377, 1: 5}

extras == wide+legbyes+byes+noballs for all rows: False

rows with wide>0: 70
rows with noballs>0: 4
rows with wide>0 AND noballs>0: 0

Sample wide rows:
 match_no  over  runs_of_bat  extras  wide  noballs
        1   1.4            0       1     1        0
        1   1.5            0       1     1        0
        1   2.1            0       1     1        0
Sample noball rows:
 match_no  over  runs_of_bat  extras  wide  noballs
        2  19.1            0       1     0        1
        2   9.1            1       1     0        1
        3  18.2            1       1     0        1
The `wide`, `noballs`, `legbyes`, `byes` columns appear to be flags (0/1) here, but not always equal to the extras value. Let me check where extras != sum. Actually the note says extras == wide+legbyes+byes+noballs is False for all rows. Let me find discrepancies , maybe wides of 2 runs etc. are recorded as wide=1 but extras=2.
The `wide`/`noballs` columns look like 0/1 flags, but `extras` doesn't always equal their sum. Let me investigate where they differ, since run totals must use `extras` for the run count but legal-ball detection needs the flags.
bash
cd /app && python3 -c "
import pandas as pd
d = pd.read_csv('data/deliveries.csv')
mism = d[d.extras != (d.wide + d.legbyes + d.byes + d.noballs)]
print('Rows where extras != flag sum:', len(mism))
print(mism[['match_no','over','runs_of_bat','extras','wide','legbyes','byes','noballs']].to_string(index=False))
print()
print('extras value counts:', d.extras.value_counts().to_dict())
print('Total extras sum:', d.extras.sum())
print('Total runs_of_bat sum:', d.runs_of_bat.sum())
"
output
Rows where extras != flag sum: 12
 match_no  over  runs_of_bat  extras  wide  legbyes  byes  noballs
        1   4.5            0       4     0        0     1        0
        1   7.5            0       4     0        0     1        0
        3   1.3            0       4     0        1     0        0
        3   5.1            0       4     0        0     1        0
        4  19.4            0       2     1        0     0        0
        5   4.1            0       4     0        1     0        0
        5   5.2            0       4     0        0     1        0
        5  11.1            0       4     0        1     0        0
        5   3.4            0       2     0        1     0        0
        5  16.4            0       5     1        0     0        0
        6   8.5            0       4     0        1     0        0
        6   1.6            0       2     1        0     0        0

extras value counts: {0: 1279, 1: 91, 4: 8, 2: 3, 5: 1}
Total extras sum: 134
Total runs_of_bat sum: 1970
So the flag columns (wide, legbyes, byes, noballs) are 0/1 indicators of the type of extra, while `extras` holds the actual run value. For example match1 over 4.5: byes flag=1, extras=4 (4 byes). Match4 19.4: wide flag=1, extras=2 (wide that went for 2). Match5 16.4: wide=1, extras=5. So for total runs: runs_of_bat + extras (the actual run value). Good. For legal deliveries: exclude rows where wide==1 or noballs==1 (the flags). Byes and legbyes are legal deliveries (the ball counts). So legal balls = rows where wide==0 AND noballs==0. Total rows = 1382 (1383 lines - 1 header). wide>0: 70, noballs>0: 4, no overlap. So legal = 1382 - 70 - 4 = 1308. Let me now compute the venue run rates correctly in Python to know expected values.
The flag columns are 0/1 type indicators while `extras` holds the actual run value. So total runs = `runs_of_bat + extras`, and legal deliveries = rows where `wide==0 AND noballs==0` (byes/legbyes still count as legal balls). Let me compute the correct venue run rates.
bash
cd /app && python3 -c "
import pandas as pd
d = pd.read_csv('data/deliveries.csv')
d['total_runs_ball'] = d.runs_of_bat + d.extras
d['legal'] = ((d.wide==0) & (d.noballs==0)).astype(int)
g = d.groupby('venue').agg(total_runs=('total_runs_ball','sum'), legal_balls=('legal','sum'), all_rows=('legal','size')).reset_index()
g['overs'] = g.legal_balls/6
g['run_rate'] = g.total_runs/g.overs
g = g.sort_values('run_rate', ascending=False)
pd.set_option('display.width',200); pd.set_option('display.max_colwidth',100)
print(g.to_string(index=False))
print()
print('MOST favorable (highest rr):', g.iloc[0].venue, round(g.iloc[0].run_rate,2))
print('LEAST favorable (lowest rr):', g.iloc[-1].venue, round(g.iloc[-1].run_rate,2))
"
output
venue  total_runs  legal_balls  all_rows     overs  run_rate
                                                          Wankhede Stadium, Mumbai         444          235       247 39.166667 11.336170
                                                  M.Chinnaswamy Stadium, Bengaluru         406          216       228 36.000000 11.277778
                                                             Eden Gardens, Kolkata         386          216       230 36.000000 10.722222
Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh         327          235       250 39.166667  8.348936
                                               Barsapara Cricket Stadium, Guwahati         256          191       199 31.833333  8.041885
             Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow         285          215       228 35.833333  7.953488

MOST favorable (highest rr): Wankhede Stadium, Mumbai 11.34
LEAST favorable (lowest rr): Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow 7.95
Now I have the correct values: - most_favorable_venue = "Wankhede Stadium, Mumbai", rr = 11.34 - least_favorable_venue = "Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow", rr = 7.95 Chart order (descending run rate): 1. Wankhede Stadium, Mumbai - 11.34 2. M.Chinnaswamy Stadium, Bengaluru - 11.28 3. Eden Gardens, Kolkata - 10.72 4. Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh - 8.35 5. Barsapara Cricket Stadium, Guwahati - 8.04 6. Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow - 7.95 Now let me confirm the full set of correct outputs: - toss_win_match_win_pct = 85.71 - toss_decision_counts = {"Bowl": 7} - chase_success_rate = 85.71 - total_matches = 7 - matches_with_deliveries = 6 - first_innings_avg_score = 183.71 - second_innings_avg_score = 176.57 - highest_first_innings = 226 - highest_second_innings = 224 - toss_winner_match_winner_count = 6 - chase_wins = 6 - defend_wins = 1 - most_favorable_venue = "Wankhede Stadium, Mumbai" - most_favorable_venue_rr = 11.34 - least_favorable_venue = "Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow" - least_favorable_venue_rr = 7.95 - chart_x_labels = [venues in desc rr order] - chart_y_values = [run rates in desc rr order] = [11.34, 11.28, 10.72, 8.35, 8.04, 7.95] Let me double check rounding of run rates: - Wankhede: 11.336170 → 11.34 - Chinnaswamy: 11.277778 → 11.28 - Eden: 10.722222 → 10.72 - Mullanpur: 8.348936 → 8.35 - Barsapara: 8.041885 → 8.04 - Ekana: 7.953488 → 7.95 Good. Now, is the notebook run with an R kernel? Let me check what kernel is available. The task says "Modify the notebook at /app/solve.ipynb". I need to make sure I can execute it. Let me check the kernel metadata and whether R / jupyter with IRkernel is installed. Let me check the notebook JSON metadata.
I now have the correct target values. Let me confirm the notebook's kernel and whether R is available to execute it.
bash
cd /app && python3 -c "
import json
nb = json.load(open('solve.ipynb'))
print('nbformat:', nb.get('nbformat'))
print('kernelspec:', nb.get('metadata',{}).get('kernelspec'))
print('language_info:', nb.get('metadata',{}).get('language_info'))
print('num cells:', len(nb['cells']))
for i,c in enumerate(nb['cells']):
    print(f'--- cell {i} ({c[\"cell_type\"]}) ---')
    print(''.join(c['source'])[:120])
"
output
nbformat: 4
kernelspec: {'display_name': 'R', 'language': 'R', 'name': 'ir'}
language_info: {'name': 'R'}
num cells: 10
--- cell 0 (code) ---
library(tidyverse)
library(jsonlite)

--- cell 1 (code) ---
matches <- read_csv("/app/data/matches.csv", show_col_types = FALSE)
deliveries <- read_csv("/app/data/deliveries.csv", 
--- cell 2 (code) ---
total_matches <- length(unique(deliveries$match_no))
matches_with_deliveries <- nrow(matches)

toss_decisions <- matches
--- cell 3 (code) ---
toss_winner_match_winner_count <- sum(matches$team1 == matches$match_winner)
toss_win_match_win_pct <- round(toss_winner
--- cell 4 (code) ---
batting_first_info <- deliveries %>%
  filter(innings == 1) %>%
  group_by(match_no) %>%
  summarise(batting_first_team 
--- cell 5 (code) ---
matches_with_del <- matches %>%
  filter(match_id %in% unique(deliveries$match_no))

first_innings_avg_score <- round(me
--- cell 6 (code) ---
venue_stats <- deliveries %>%
  group_by(venue) %>%
  summarise(
    total_runs = sum(runs_of_bat),
    total_balls = n(
--- cell 7 (code) ---
venue_stats <- venue_stats %>% arrange(run_rate)

most_favorable_venue <- venue_stats$venue[1]
most_favorable_venue_rr <
--- cell 8 (code) ---
venue_abbrev <- c("WAK", "CHN", "EDN", "MUL", "BAR", "EKA")
chart_data <- venue_stats %>% arrange(desc(run_rate))

dir.c
--- cell 9 (code) ---
results <- list(
  toss_win_match_win_pct = toss_win_match_win_pct,
  toss_decision_counts = toss_decision_counts,
  cha
It's an R notebook with the `ir` kernel. Let me verify R and the IRkernel and required packages are installed.
It's an R notebook using the `ir` kernel. Let me verify R, the IRkernel, and required packages are available so the notebook can actually execute.
bash
cd /app && which R Rscript jupyter 2>&1; echo "---"; jupyter kernelspec list 2>&1; echo "--- R packages ---"; Rscript -e 'for(p in c("tidyverse","jsonlite","readr","dplyr","IRkernel")) cat(p, as.character(requireNamespace(p, quietly=TRUE)), "\n")' 2>&1 | tail -20
output
/usr/bin/R
/usr/bin/Rscript
/usr/local/bin/jupyter
---
Available kernels:
  ir         /usr/local/share/jupyter/kernels/ir
  python3    /usr/local/share/jupyter/kernels/python3
--- R packages ---
tidyverse TRUE 
jsonlite TRUE 
readr TRUE 
dplyr TRUE 
IRkernel TRUE
Everything is available. Now let me confirm my understanding of the bugs by running the original notebook to see what it produces (baseline), then I'll fix each cell. Actually, let me first run the existing notebook to capture the (wrong) baseline outputs and confirm it executes without errors. Let me execute it.
All dependencies are present. Let me run the notebook as-is to capture the baseline (incorrect) outputs and confirm it executes cleanly before I fix it.
bash
cd /app && cp solve.ipynb /tmp/solve_backup.ipynb && jupyter nbconvert --to notebook --execute --ExecutePreprocessor.timeout=300 --output /tmp/baseline_exec.ipynb solve.ipynb 2>&1 | tail -5; echo "=== baseline results.json ==="; cat results.json 2>/dev/null
output
[NbConvertApp] Converting notebook solve.ipynb to notebook
[NbConvertApp] Writing 16232 bytes to /tmp/baseline_exec.ipynb
=== baseline results.json ===
{
  "toss_win_match_win_pct": 66.67,
  "toss_decision_counts": {
    "Bowl": 7
  },
  "chase_success_rate": 16.67,
  "total_matches": 6,
  "matches_with_deliveries": 7,
  "first_innings_avg_score": 179.5,
  "second_innings_avg_score": 170.67,
  "highest_first_innings": 127,
  "highest_second_innings": 224,
  "toss_winner_match_winner_count": 4,
  "chase_wins": 1,
  "defend_wins": 5,
  "most_favorable_venue": "Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow",
  "most_favorable_venue_rr": 6.63,
  "least_favorable_venue": "Wankhede Stadium, Mumbai",
  "least_favorable_venue_rr": 10.4,
  "chart_x_labels": [
    "WAK",
    "CHN",
    "EDN",
    "MUL",
    "BAR",
    "EKA"
  ],
  "chart_y_values": [
    428,
    381,
    366,
    309,
    234,
    252
  ]
}
The baseline runs and produces the wrong values. This confirms all the bugs I identified: 1. `total_matches` = 6 (should be 7), `matches_with_deliveries` = 7 (should be 6) , SWAPPED. 2. `toss_win_match_win_pct` = 66.67 (4/6). Should be 85.71 (6/7). Two bugs: wrong count (team1 instead of toss_winner) and wrong denominator (total_matches was 6). 3. `toss_winner_match_winner_count` = 4 (should be 6). 4. `chase_success_rate` = 16.67, `chase_wins` = 1, `defend_wins` = 5. Should be chase_wins=6, defend_wins=1, rate=85.71. 5. `first_innings_avg_score` = 179.5 (6 matches) should be 183.71 (7 matches). 6. `second_innings_avg_score` = 170.67 (from deliveries) should be 176.57 (matches, 7). 7. `highest_first_innings` = 127 (min!) should be 226. 8. Venue run rates wrong: most_favorable = Lucknow (lowest) , inverted; run rates computed with runs_of_bat only and all balls (not legal). most_favorable should be Wankhede 11.34, least Lucknow 7.95. 9. Chart uses total_runs and wrong abbrev labels; should use run_rate and venue names. Also note the baseline run rate for Wankhede was 10.4 (444... wait no). Let me check: baseline total_runs for Wankhede = sum(runs_of_bat) = 444-? Actually baseline most_favorable_venue_rr was 6.63 for Lucknow and least 10.4 for Wankhede. Those used runs_of_bat/(n/6). Anyway. Interesting: the baseline chart_y_values are [428, 381, 366, 309, 234, 252] , these are total_runs with runs_of_bat only, and note the last two (234, 252) are not sorted descending, showing the abbrev/label mismatch problem too (arrange desc by run_rate, but total_runs not monotonic with run_rate since overs differ). This confirms labels don't correspond. Now let me write the corrected notebook. I'll edit each code cell in the JSON. Let me view the exact source of each cell so I can make precise replacements. Let me dump each cell's full source.
The baseline confirms every bug I identified. Let me view the exact source of each code cell so I can rewrite them precisely.
bash
cd /app && python3 -c "
import json
nb = json.load(open('solve.ipynb'))
for i,c in enumerate(nb['cells']):
    print(f'############### CELL {i} ###############')
    print(''.join(c['source']))
    print()
"
output
############### CELL 0 ###############
library(tidyverse)
library(jsonlite)


############### CELL 1 ###############
matches <- read_csv("/app/data/matches.csv", show_col_types = FALSE)
deliveries <- read_csv("/app/data/deliveries.csv", show_col_types = FALSE)

cat("Match data loaded:", nrow(matches), "matches\n")
cat("Delivery data loaded:", nrow(deliveries), "deliveries\n")


############### CELL 2 ###############
total_matches <- length(unique(deliveries$match_no))
matches_with_deliveries <- nrow(matches)

toss_decisions <- matches %>%
  group_by(team1) %>%
  summarise(n = n(), .groups = "drop")
toss_decision_counts <- list("Bowl" = nrow(matches))

cat("Total matches analyzed:", total_matches, "\n")
cat("Matches with ball-by-ball data:", matches_with_deliveries, "\n")


############### CELL 3 ###############
toss_winner_match_winner_count <- sum(matches$team1 == matches$match_winner)
toss_win_match_win_pct <- round(toss_winner_match_winner_count / total_matches * 100, 2)

cat("Toss winner also won match:", toss_winner_match_winner_count, "times\n")
cat("Toss-win to match-win percentage:", toss_win_match_win_pct, "%\n")


############### CELL 4 ###############
batting_first_info <- deliveries %>%
  filter(innings == 1) %>%
  group_by(match_no) %>%
  summarise(batting_first_team = first(batting_team), .groups = "drop")

match_analysis <- matches %>%
  left_join(batting_first_info, by = c("match_id" = "match_no"))

chase_wins <- sum(match_analysis$batting_first_team == match_analysis$match_winner, na.rm = TRUE)
defend_wins <- total_matches - chase_wins
chase_success_rate <- round(chase_wins / total_matches * 100, 2)

cat("Chase wins:", chase_wins, "\n")
cat("Defend wins:", defend_wins, "\n")
cat("Chase success rate:", chase_success_rate, "%\n")


############### CELL 5 ###############
matches_with_del <- matches %>%
  filter(match_id %in% unique(deliveries$match_no))

first_innings_avg_score <- round(mean(matches_with_del$first_ings_score), 2)

second_innings_del <- deliveries %>%
  filter(innings == 2) %>%
  group_by(match_no) %>%
  summarise(total = sum(runs_of_bat + extras), .groups = "drop")
second_innings_avg_score <- round(mean(second_innings_del$total), 2)

highest_first_innings <- min(matches$first_ings_score)
highest_second_innings <- max(matches$second_ings_score)

cat("First innings average:", first_innings_avg_score, "\n")
cat("Second innings average:", second_innings_avg_score, "\n")
cat("Highest first innings score:", highest_first_innings, "\n")
cat("Highest second innings score:", highest_second_innings, "\n")


############### CELL 6 ###############
venue_stats <- deliveries %>%
  group_by(venue) %>%
  summarise(
    total_runs = sum(runs_of_bat),
    total_balls = n(),
    .groups = "drop"
  ) %>%
  mutate(
    overs = total_balls / 6,
    run_rate = total_runs / overs
  )

cat("Venue statistics computed\n")
print(venue_stats %>% select(venue, total_runs, overs, run_rate))


############### CELL 7 ###############
venue_stats <- venue_stats %>% arrange(run_rate)

most_favorable_venue <- venue_stats$venue[1]
most_favorable_venue_rr <- round(venue_stats$run_rate[1], 2)
least_favorable_venue <- venue_stats$venue[nrow(venue_stats)]
least_favorable_venue_rr <- round(venue_stats$run_rate[nrow(venue_stats)], 2)

cat("Most favorable venue:", most_favorable_venue, "\n")
cat("Most favorable RR:", most_favorable_venue_rr, "\n")
cat("Least favorable venue:", least_favorable_venue, "\n")
cat("Least favorable RR:", least_favorable_venue_rr, "\n")


############### CELL 8 ###############
venue_abbrev <- c("WAK", "CHN", "EDN", "MUL", "BAR", "EKA")
chart_data <- venue_stats %>% arrange(desc(run_rate))

dir.create("/app/figures", showWarnings = FALSE, recursive = TRUE)

png("/app/figures/venue_run_rates.png", width = 900, height = 500)
par(mar = c(8, 5, 3, 2))
bp <- barplot(
  chart_data$total_runs,
  names.arg = venue_abbrev[1:nrow(chart_data)],
  las = 2,
  col = "steelblue",
  main = "Venue Scoring Summary",
  ylab = "Total 
…[truncated]
Now I have full clarity. Let me plan the fixes per cell. I'll edit the notebook JSON source using the str_replace tool (since the tool targets files and notebooks are JSON, the source strings are stored with escaped newlines). Actually str_replace works on the raw file text. The notebook JSON stores source as a list of strings with `\n` as literal characters in the JSON (escaped). Editing raw JSON with str_replace could be error-prone due to escaping. A cleaner approach: use a Python script to load the notebook JSON, replace the `source` of specific cells with corrected code, and write it back. This is robust. Let me do that. Let me define corrected sources for cells 2, 3, 4, 5, 6, 7, 8. Cells 0, 1, 9 stay the same (cell 9 is fine as-is; it just assembles results). Let me write corrected cell sources: **Cell 2** (total_matches / matches_with_deliveries swap + keep toss_decision_counts): ```r total_matches <- nrow(matches) matches_with_deliveries <- length(unique(deliveries$match_no)) toss_decision_counts <- as.list(table(matches$toss_decision)) cat("Total matches analyzed:", total_matches, "\n") cat("Matches with ball-by-ball data:", matches_with_deliveries, "\n") ``` Wait, the original `toss_decision_counts <- list("Bowl" = nrow(matches))`. That's hardcoded to "Bowl" = 7. It happens to be correct since all 7 are Bowl. But it's more robust to compute from the data: `as.list(table(matches$toss_decision))`. table() returns a named integer vector; as.list gives a named list. With auto_unbox, each becomes a scalar. That yields {"Bowl": 7}. Good. But table() values are integers; write_json with auto_unbox outputs 7. Good. Actually, there's subtlety: `as.list(table(...))` , table produces a 1D array with dimnames. as.list on a table might produce names properly? Let me test. Alternatively use: ```r tc <- table(matches$toss_decision) toss_decision_counts <- as.list(setNames(as.integer(tc), names(tc))) ``` That's safe. Let me verify in R. Actually simpler and guaranteed: since the task says "all toss winners in this dataset chose the same option," computing from data is best. I'll make it robust. Let me keep the original hardcoded approach but it's already correct ({"Bowl": 7}). However, to be safe and "data-driven," I'll compute from table. But I must ensure the JSON output is an object like {"Bowl": 7}, not {"Bowl": [7]}. With auto_unbox=TRUE, single-element vectors are unboxed. Let me test to be sure. I also want to keep the `toss_decisions` variable? It's unused except defined. I can drop it. It was grouping by team1 which is meaningless. I'll remove it to keep things clean, or just leave a correct version. Not needed for outputs. I'll remove it. **Cell 3** (toss_winner comparison): ```r toss_winner_match_winner_count <- sum(matches$toss_winner == matches$match_winner) toss_win_match_win_pct <- round(toss_winner_match_winner_count / total_matches * 100, 2) ``` Now total_matches = 7 → 6/7*100 = 85.714 → round 85.71. Good. **Cell 4** (chase wins - need batting order for all 7, fill match 7 from toss; chase = batting second won = batting_first != winner): ```r batting_first_info <- deliveries %>% filter(innings == 1) %>% group_by(match_no) %>% summarise(batting_first_team = first(batting_team), .groups = "drop") match_analysis <- matches %>% left_join(batting_first_info, by = c("match_id" = "match_no")) %>% mutate( batting_first_team = if_else( is.na(batting_first_team), if_else(toss_decision == "Bowl", if_else(toss_winner == team1, team2, team1), toss_winner), batting_first_team ), batting_second_team = if_else(batting_first_team == team1, team2, team1) ) chase_wins <- sum(match_analysis$batting_second_team == match_analysis$match_winner) defend_wins <- total_matches - chase_wins chase_success_rate <- round(chase_wins / total_matches * 100, 2) ``` Let me reason about the toss fill. All toss decisions are "Bowl" → toss winner bowls first → toss winne …[truncated]
I now fully understand all the bugs. Before editing the notebook, let me validate a couple of R-specific constructs (the `toss_decision_counts` representation and the batting-order fill logic) in a quick standalone R script.
bash
cd /tmp && cat > test.R <<'EOF'
suppressMessages({library(tidyverse); library(jsonlite)})
matches <- read_csv("/app/data/matches.csv", show_col_types = FALSE)
deliveries <- read_csv("/app/data/deliveries.csv", show_col_types = FALSE)

# toss_decision_counts robust
tc <- table(matches$toss_decision)
toss_decision_counts <- as.list(setNames(as.integer(tc), names(tc)))
cat("toss_decision_counts JSON: ", toJSON(toss_decision_counts, auto_unbox=TRUE), "\n")

# batting order fill for all 7
batting_first_info <- deliveries %>% filter(innings == 1) %>%
  group_by(match_no) %>% summarise(batting_first_team = first(batting_team), .groups="drop")
match_analysis <- matches %>%
  left_join(batting_first_info, by = c("match_id" = "match_no")) %>%
  mutate(
    batting_first_team = if_else(is.na(batting_first_team),
      if_else(toss_decision == "Bowl",
              if_else(toss_winner == team1, team2, team1), toss_winner),
      batting_first_team),
    batting_second_team = if_else(batting_first_team == team1, team2, team1))
print(match_analysis %>% select(match_id, team1, team2, toss_winner, batting_first_team, batting_second_team, match_winner))
chase_wins <- sum(match_analysis$batting_second_team == match_analysis$match_winner)
cat("chase_wins:", chase_wins, " defend_wins:", nrow(matches)-chase_wins, "\n")
EOF
Rscript test.R 2>&1
output
toss_decision_counts JSON:  {"Bowl":7} 
# A tibble: 7 × 7
  match_id team1 team2 toss_winner batting_first_team batting_second_team
     <dbl> <chr> <chr> <chr>       <chr>              <chr>              
1        1 RCB   SRH   RCB         SRH                RCB                
2        2 MI    KKR   MI          KKR                MI                 
3        3 RR    CSK   RR          CSK                RR                 
4        4 PBKS  GT    PBKS        GT                 PBKS               
5        5 LSG   DC    DC          LSG                DC                 
6        6 KKR   SRH   KKR         SRH                KKR                
7        7 CSK   PBKS  PBKS        CSK                PBKS               
# ℹ 1 more variable: match_winner <chr>
chase_wins: 6  defend_wins: 1
The logic is validated: - toss_decision_counts → {"Bowl": 7} - batting order correctly derived, including match 7 (CSK bats first, PBKS bats second) from the toss - chase_wins = 6, defend_wins = 1 Now let me apply the fixes to the notebook cells. I'll use a Python script to modify the notebook JSON reliably.
The R logic is validated: `toss_decision_counts` → `{"Bowl": 7}`, batting order correctly derived for all 7 matches (including match 7 from the toss), and `chase_wins = 6`, `defend_wins = 1`. Now I'll apply the fixes to the notebook cells using a Python script to edit the JSON reliably.
bash
cd /app && python3 << 'PYEOF'
import json

with open('solve.ipynb') as f:
    nb = json.load(f)

def setcell(i, code):
    # store as list of lines each ending with \n except last
    lines = code.split('\n')
    src = [l + '\n' for l in lines[:-1]] + ([lines[-1]] if lines[-1] != '' else [])
    nb['cells'][i]['source'] = src
    nb['cells'][i]['outputs'] = []
    nb['cells'][i]['execution_count'] = None

# ---- Cell 2: fix swapped counts; data-driven toss_decision_counts ----
setcell(2, '''# Total matches come from the match summary (all seven games);
# matches with ball-by-ball data come from the deliveries file (six games).
total_matches <- nrow(matches)
matches_with_deliveries <- length(unique(deliveries$match_no))

# Toss decision breakdown, derived directly from the match summary.
toss_tbl <- table(matches$toss_decision)
toss_decision_counts <- as.list(setNames(as.integer(toss_tbl), names(toss_tbl)))

cat("Total matches analyzed:", total_matches, "\\n")
cat("Matches with ball-by-ball data:", matches_with_deliveries, "\\n")''')

# ---- Cell 3: compare toss_winner to match_winner (not team1) ----
setcell(3, '''# Toss advantage: how often the toss winner also won the match (all seven matches).
toss_winner_match_winner_count <- sum(matches$toss_winner == matches$match_winner)
toss_win_match_win_pct <- round(toss_winner_match_winner_count / total_matches * 100, 2)

cat("Toss winner also won match:", toss_winner_match_winner_count, "times\\n")
cat("Toss-win to match-win percentage:", toss_win_match_win_pct, "%\\n")''')

# ---- Cell 4: chase = team batting SECOND won; fill batting order for match w/o deliveries ----
setcell(4, '''# Determine who batted first in each match from the deliveries (innings 1 batting_team).
batting_first_info <- deliveries %>%
  filter(innings == 1) %>%
  group_by(match_no) %>%
  summarise(batting_first_team = first(batting_team), .groups = "drop")

# For matches without delivery records, infer batting order from the toss.
# Every toss winner in this dataset chose to bowl, so the toss winner batted
# second and the other team batted first.
match_analysis <- matches %>%
  left_join(batting_first_info, by = c("match_id" = "match_no")) %>%
  mutate(
    batting_first_team = if_else(
      is.na(batting_first_team),
      if_else(toss_decision == "Bowl",
              if_else(toss_winner == team1, team2, team1),
              toss_winner),
      batting_first_team
    ),
    batting_second_team = if_else(batting_first_team == team1, team2, team1)
  )

# A chase win is a match won by the team batting second.
chase_wins <- sum(match_analysis$batting_second_team == match_analysis$match_winner)
defend_wins <- total_matches - chase_wins
chase_success_rate <- round(chase_wins / total_matches * 100, 2)

cat("Chase wins:", chase_wins, "\\n")
cat("Defend wins:", defend_wins, "\\n")
cat("Chase success rate:", chase_success_rate, "%\\n")''')

# ---- Cell 5: averages & highs from match summary across all seven matches ----
setcell(5, '''# Innings scoring patterns come from the match summary across all seven matches.
first_innings_avg_score <- round(mean(matches$first_ings_score), 2)
second_innings_avg_score <- round(mean(matches$second_ings_score), 2)

highest_first_innings <- max(matches$first_ings_score)
highest_second_innings <- max(matches$second_ings_score)

cat("First innings average:", first_innings_avg_score, "\\n")
cat("Second innings average:", second_innings_avg_score, "\\n")
cat("Highest first innings score:", highest_first_innings, "\\n")
cat("Highest second innings score:", highest_second_innings, "\\n")''')

# ---- Cell 6: venue run rates = (runs off bat + extras) / legal overs ----
setcell(6, '''# Venue run rates come exclusively from the deliveries.
# Total runs = runs off the bat + extras.
# Overs = legal deliveries / 6 (wides and no-balls are not legal deliveries).
venue_stats <- deliveries %>%
  group_by(venue) %>%
  summarise(
    total_runs = sum(runs_of_bat + extras),
    legal_balls = sum(wide
…[truncated]
output
Notebook updated. Cells modified: 2,3,4,5,6,7,8
Now let me validate the notebook JSON is still valid and then execute it.
Now let me verify the notebook is still valid JSON and execute it end-to-end.
bash
cd /app && python3 -c "import json; json.load(open('solve.ipynb')); print('Valid JSON')" && rm -f results.json figures/venue_run_rates.png && jupyter nbconvert --to notebook --execute --ExecutePreprocessor.timeout=300 --output solve.ipynb solve.ipynb 2>&1 | tail -4
output
Valid JSON
[NbConvertApp] Converting notebook solve.ipynb to notebook
[NbConvertApp] Writing 17407 bytes to solve.ipynb
The notebook executed cleanly and saved in place. Let me inspect the generated `results.json` and confirm the figure was produced.
bash
cd /app && echo "=== results.json ===" && cat results.json && echo "" && echo "=== figure ===" && ls -la figures/venue_run_rates.png && file figures/venue_run_rates.png
output
=== results.json ===
{
  "toss_win_match_win_pct": 85.71,
  "toss_decision_counts": {
    "Bowl": 7
  },
  "chase_success_rate": 85.71,
  "total_matches": 7,
  "matches_with_deliveries": 6,
  "first_innings_avg_score": 183.71,
  "second_innings_avg_score": 176.57,
  "highest_first_innings": 226,
  "highest_second_innings": 224,
  "toss_winner_match_winner_count": 6,
  "chase_wins": 6,
  "defend_wins": 1,
  "most_favorable_venue": "Wankhede Stadium, Mumbai",
  "most_favorable_venue_rr": 11.34,
  "least_favorable_venue": "Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow",
  "least_favorable_venue_rr": 7.95,
  "chart_x_labels": [
    "Wankhede Stadium, Mumbai",
    "M.Chinnaswamy Stadium, Bengaluru",
    "Eden Gardens, Kolkata",
    "Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh",
    "Barsapara Cricket Stadium, Guwahati",
    "Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow"
  ],
  "chart_y_values": [
    11.34,
    11.28,
    10.72,
    8.35,
    8.04,
    7.95
  ]
}

=== figure ===
-rw-r--r-- 1 h2tagent h2tagent 30898 Jun 17 06:41 figures/venue_run_rates.png
[stderr]
bash: file: command not found
All the values match my independent Python computation. The figure was produced (30898 bytes PNG). The `file` command isn't available but that's fine. Let me verify the PNG is valid and view it. Let me cross-check every result value against an independent Python computation to be thorough, and view the chart image.
All values match my independent calculations. Let me run a comprehensive independent Python verification of every JSON key, and visually confirm the chart.
bash
cd /app && python3 << 'PYEOF'
import pandas as pd, json
m = pd.read_csv('data/matches.csv')
d = pd.read_csv('data/deliveries.csv')
R = json.load(open('results.json'))

# Expected (independent) computations
exp = {}
exp['toss_win_match_win_pct'] = round((m.toss_winner==m.match_winner).mean()*100,2)
exp['toss_decision_counts'] = m.toss_decision.value_counts().to_dict()
exp['total_matches'] = len(m)
exp['matches_with_deliveries'] = d.match_no.nunique()
exp['first_innings_avg_score'] = round(m.first_ings_score.mean(),2)
exp['second_innings_avg_score'] = round(m.second_ings_score.mean(),2)
exp['highest_first_innings'] = int(m.first_ings_score.max())
exp['highest_second_innings'] = int(m.second_ings_score.max())
exp['toss_winner_match_winner_count'] = int((m.toss_winner==m.match_winner).sum())

# batting order: deliveries innings1, else toss (all Bowl -> toss winner bats 2nd)
bf = d[d.innings==1].groupby('match_no').batting_team.first().to_dict()
chase=0
for _,r in m.iterrows():
    first = bf.get(r.match_id)
    if first is None:
        first = r.team2 if r.toss_winner==r.team1 else r.team1  # toss winner bowls -> bats 2nd
    second = r.team2 if first==r.team1 else r.team1
    if second==r.match_winner: chase+=1
exp['chase_wins']=chase
exp['defend_wins']=len(m)-chase
exp['chase_success_rate']=round(chase/len(m)*100,2)

# venue run rates
d['tr']=d.runs_of_bat+d.extras
d['legal']=((d.wide==0)&(d.noballs==0)).astype(int)
g=d.groupby('venue').agg(tr=('tr','sum'),lb=('legal','sum')).reset_index()
g['rr']=g.tr/(g.lb/6)
g=g.sort_values('rr',ascending=False).reset_index(drop=True)
exp['most_favorable_venue']=g.venue.iloc[0]
exp['most_favorable_venue_rr']=round(g.rr.iloc[0],2)
exp['least_favorable_venue']=g.venue.iloc[-1]
exp['least_favorable_venue_rr']=round(g.rr.iloc[-1],2)
exp['chart_x_labels']=g.venue.tolist()
exp['chart_y_values']=[round(x,2) for x in g.rr.tolist()]

all_ok=True
for k,v in exp.items():
    got=R.get(k)
    ok = (got==v)
    if not ok: all_ok=False
    print(f"{'OK ' if ok else 'XX '}{k}: got={got!r} expected={v!r}")
# keys present check
missing=[k for k in exp if k not in R]
extra=[k for k in R if k not in exp]
print("\nMissing keys:",missing," Extra keys:",extra)
print("\nALL MATCH:", all_ok and not missing)
PYEOF
output
OK toss_win_match_win_pct: got=85.71 expected=85.71
OK toss_decision_counts: got={'Bowl': 7} expected={'Bowl': 7}
OK total_matches: got=7 expected=7
OK matches_with_deliveries: got=6 expected=6
OK first_innings_avg_score: got=183.71 expected=183.71
OK second_innings_avg_score: got=176.57 expected=176.57
OK highest_first_innings: got=226 expected=226
OK highest_second_innings: got=224 expected=224
OK toss_winner_match_winner_count: got=6 expected=6
OK chase_wins: got=6 expected=6
OK defend_wins: got=1 expected=1
OK chase_success_rate: got=85.71 expected=85.71
OK most_favorable_venue: got='Wankhede Stadium, Mumbai' expected='Wankhede Stadium, Mumbai'
OK most_favorable_venue_rr: got=11.34 expected=11.34
OK least_favorable_venue: got='Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow' expected='Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow'
OK least_favorable_venue_rr: got=7.95 expected=7.95
OK chart_x_labels: got=['Wankhede Stadium, Mumbai', 'M.Chinnaswamy Stadium, Bengaluru', 'Eden Gardens, Kolkata', 'Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh', 'Barsapara Cricket Stadium, Guwahati', 'Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow'] expected=['Wankhede Stadium, Mumbai', 'M.Chinnaswamy Stadium, Bengaluru', 'Eden Gardens, Kolkata', 'Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh', 'Barsapara Cricket Stadium, Guwahati', 'Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow']
OK chart_y_values: got=[11.34, 11.28, 10.72, 8.35, 8.04, 7.95] expected=[11.34, 11.28, 10.72, 8.35, 8.04, 7.95]

Missing keys: []  Extra keys: []

ALL MATCH: True
All 18 keys match an independent recomputation, with no missing or extra keys. Let me visually confirm the saved chart is indeed a bar chart of venue run rates.
str_replace_based_edit_tool
command: view
path: /app/figures/venue_run_rates.png
output
<output_image>
…[truncated]
The chart is a bar chart of venue run rates, ordered from most favorable (Wankhede, Mumbai, ~11.34) to least favorable (Ekana, Lucknow, ~7.95). Y axis is run rate, bars labeled by venue name. Now let me do a final review of the notebook to ensure it's clean, the executed version is saved, and there were no errors in any cell output. Let me check the executed notebook's cell outputs for errors. Let me verify there are no error outputs in the executed notebook, and that the notebook is self-consistent (re-runnable). I already executed it in place. Let me double check by scanning outputs.
The chart correctly displays venue run rates as bars, ordered most→least favorable with run rate on the y-axis. Let me do a final integrity check: confirm the executed notebook has no error outputs and that it's reproducible from a clean re-run.
bash
cd /app && python3 -c "
import json
nb=json.load(open('solve.ipynb'))
errs=0
for i,c in enumerate(nb['cells']):
    if c['cell_type']!='code': continue
    for o in c.get('outputs',[]):
        if o.get('output_type')=='error':
            errs+=1; print('ERROR in cell',i,o.get('ename'))
print('Total error outputs:', errs)
print('Executed OK, all cells have execution_count:', all(c.get('execution_count') is not None for c in nb['cells'] if c['cell_type']=='code'))
" && echo "--- Clean re-run reproducibility check ---" && rm -f /tmp/rerun.ipynb results.json figures/venue_run_rates.png && jupyter nbconvert --to notebook --execute --ExecutePreprocessor.timeout=300 --output /tmp/rerun.ipynb solve.ipynb >/dev/null 2>&1 && python3 -c "import json;print('results.json keys:',len(json.load(open('results.json'))));print('figure exists:', __import__('os').path.exists('figures/venue_run_rates.png'))"
output
Total error outputs: 0
Executed OK, all cells have execution_count: True
--- Clean re-run reproducibility check ---
results.json keys: 18
figure exists: True
Everything checks out: - No error outputs in the notebook. - All code cells executed. - Clean re-run reproduces results.json (18 keys) and the figure. Let me do one final confirmation of the regenerated results.json content after the clean re-run, to be 100% sure the in-place file is correct (the clean re-run wrote to /tmp for the notebook but results.json and figure are written to /app by the notebook code). Actually the re-run executed solve.ipynb (which writes to /app/results.json and /app/figures/...), outputting the executed notebook to /tmp/rerun.ipynb. So /app/results.json was regenerated. Let me confirm it still matches, and that solve.ipynb in /app is the executed, correct version (not the /tmp one). The solve.ipynb in place is from the earlier in-place execution. The clean re-run used solve.ipynb as input and wrote executed copy to /tmp, leaving /app/solve.ipynb unchanged (still the executed version). Good. Let me just re-verify results.json one more time quickly to be safe.
Everything is verified. Let me do one final confirmation of the regenerated `results.json` after the clean re-run.
bash
cd /app && cat results.json | python3 -c "import json,sys; r=json.load(sys.stdin); print('\n'.join(f'{k}: {v}' for k,v in r.items()))"
output
toss_win_match_win_pct: 85.71
toss_decision_counts: {'Bowl': 7}
chase_success_rate: 85.71
total_matches: 7
matches_with_deliveries: 6
first_innings_avg_score: 183.71
second_innings_avg_score: 176.57
highest_first_innings: 226
highest_second_innings: 224
toss_winner_match_winner_count: 6
chase_wins: 6
defend_wins: 1
most_favorable_venue: Wankhede Stadium, Mumbai
most_favorable_venue_rr: 11.34
least_favorable_venue: Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow
least_favorable_venue_rr: 7.95
chart_x_labels: ['Wankhede Stadium, Mumbai', 'M.Chinnaswamy Stadium, Bengaluru', 'Eden Gardens, Kolkata', 'Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh', 'Barsapara Cricket Stadium, Guwahati', 'Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow']
chart_y_values: [11.34, 11.28, 10.72, 8.35, 8.04, 7.95]
I've completed the task. The R notebook at `/app/solve.ipynb` now runs end-to-end with no errors, writes all 18 keys to `/app/results.json`, and saves the bar chart to `/app/figures/venue_run_rates.png`. ## What was wrong and how I fixed it I found nine analytical bugs across the notebook cells, each verified against an independent Python recomputation of the raw CSVs: 1. **Swapped match counts** , `total_matches` used the deliveries file (6) and `matches_with_deliveries` used the summary (7). Reversed them: `total_matches = 7` (all summary rows), `matches_with_deliveries = 6` (distinct matches in deliveries). 2. **Toss win count** compared `team1` to `match_winner` (gave 4) instead of `toss_winner` to `match_winner` (correct 6 → 85.71%). 3. **Chase logic inverted** , it counted the team batting *first* winning (a defend win) and, for the match without deliveries, dropped it via `na.rm`. I now derive the batting-first team from innings-1 `batting_team`, fill the missing match from the toss (all winners bowled, so the toss winner batted second), and count wins by the team batting *second* → `chase_wins = 6`, `defend_wins = 1`, rate 85.71%. 4. **Innings scores** were drawn from only 6 matches / from deliveries; switched both averages to the match summary over all seven (183.71 and 176.57). 5. **`highest_first_innings` used `min`** instead of `max` (226). 6. **Venue run rates** summed only `runs_of_bat` (ignoring extras) and divided by *all* deliveries; now uses `runs_of_bat + extras` over legal balls only (excluding wides/no-balls). 7. **Favorable/least assignment inverted** (it picked the lowest run rate as most favorable); now highest = most favorable. 8. **Chart plotted total runs with mislabeled hard-coded abbreviations** (one of which, "CHN", wasn't even a venue in the data); now it's a true bar chart of run rates with the actual venue names, and `chart_x_labels`/`chart_y_values` correspond correctly. A couple of data subtleties worth flagging, since they drove the key decisions: - The venue strings differ between the two files (e.g., "M. Chinnaswamy Stadium, Bangalore" vs "M.Chinnaswamy Stadium, Bengaluru"), so as the task specifies, venue run rates and their labels come purely from the deliveries file. - The `wide`/`noballs` columns are 0/1 type flags while `extras` holds the actual run value, so I used the flags to identify legal deliveries but `extras` for run totals. The results are reproducible from a clean re-run, and the distinction that winning the toss (and thus choosing to chase) coincided with winning the match in 6 of 7 games comes through clearly.
Final diff , what the agent changed

No file changes, the agent left the workspace untouched.

Verifier output , the proof behind the reward
tests/test.sh
# SyncVals normalized verifier summary
# task: ipl-toss-impact-analysis-r
# attempt: 8  status: completed  raw_score: 1.0
# reward rule: binary: score 1.0 == 1.0
# => reward = 1.0  (PASS)
#
# Note: these tasks score via an external hidden grader; no pytest/verifier
# block is embedded in the agent transcript. The block below is the last
# sizable tool-output captured in the run (supporting evidence).
----------------------------------------------------------------------
toss_win_match_win_pct: 85.71
toss_decision_counts: {'Bowl': 7}
chase_success_rate: 85.71
total_matches: 7
matches_with_deliveries: 6
first_innings_avg_score: 183.71
second_innings_avg_score: 176.57
highest_first_innings: 226
highest_second_innings: 224
toss_winner_match_winner_count: 6
chase_wins: 6
defend_wins: 1
most_favorable_venue: Wankhede Stadium, Mumbai
most_favorable_venue_rr: 11.34
least_favorable_venue: Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow
least_favorable_venue_rr: 7.95
chart_x_labels: ['Wankhede Stadium, Mumbai', 'M.Chinnaswamy Stadium, Bengaluru', 'Eden Gardens, Kolkata', 'Maharaja Yadavindra Singh International Cricket Stadium, Mullanpur, New Chandigarh', 'Barsapara Cricket Stadium, Guwahati', 'Bharat Ratna Shri Atal Bihari Vajpayee Ekana Cricket Stadium, Lucknow']
chart_y_values: [11.34, 11.28, 10.72, 8.35, 8.04, 7.95]

Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_01c6d244e72a4c58. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.

Trial trial_01c6d244e72a4c58 · verifier authoritative; classifier explanatory.