tests/test.sh exit code (0 → resolved); the classification below is post-hoc and cannot change it./bin/zsh -lc 'pwd && rg --files'
/bin/zsh -lc 'pwd && rg --files'
<tmp>/workspace data/operations.json main.py task.toml environment/README.md instruction.md
/bin/zsh -lc "python3 - <<'PY'
import json
from pathlib import Path
p=Path('data/operations.json')
print(p.exists(), p.stat().st_size if p.exists() else None)
if p.exists():
data=json.loads(p.read_text())
print(data.keys())
print({k:data[k] for k in data if k"'!='"'operations'})
print('ops', len(data['operations']))
print('first', data['operations'][:10])
PY"/bin/zsh -lc "python3 - <<'PY'
import json
from pathlib import Path
p=Path('data/operations.json')
print(p.exists(), p.stat().st_size if p.exists() else None)
if p.exists():
data=json.loads(p.read_text())
print(data.keys())
print({k:data[k] for k in data if k"'!='"'operations'})
print('ops', len(data['operations']))
print('first', data['operations'][:10])
PY"True 552
dict_keys(['capacity', 'protected_capacity', 'default_ttl', 'miss', 'reset_interval', 'operations'])
{'capacity': 9, 'protected_capacity': 4, 'default_ttl': 8, 'miss': -1, 'reset_interval': 7}
ops 22
first [['put', 1, 100, 2], ['put', 2, 200, 2], ['put', 3, 300, 1], ['get', 1], ['get', 2], ['get', 1], ['put', 4, 400, 2], ['get', 3], ['get', 1], ['put', 5, 500, 2]]
/bin/zsh -lc "sed -n '1,240p' main.py"
/bin/zsh -lc "sed -n '1,240p' main.py"
# Read data/operations.json and write output/result.json.
#
# The input object carries: capacity, protected_capacity, default_ttl, miss,
# reset_interval, and operations (a list of ["put", key, value, cost] or
# ["get", key] entries).
#
# The output object must carry: get_results, final_probation, final_protected,
# total_weight, and rejected. See the task instructions for the exact rules
# (segmented recency, logical-clock expiry, weight budget, frequency-gated
# admission, demotion-on-overflow, and periodic frequency halving).
#
# TODO: implement the cache. The stub below writes an empty, incorrect result
# so that an unmodified program does not pass.
import json
import os
with open("data/operations.json") as f:
data = json.load(f)
capacity = data["capacity"]
operations = data["operations"]
result = {
"get_results": [],
"final_probation": [],
"final_protected": [],
"total_weight": 0,
"rejected": 0,
}
os.makedirs("output", exist_ok=True)
with open("output/result.json", "w") as f:
json.dump(result, f)
/bin/zsh -lc "sed -n '1,220p' instruction.md"
/bin/zsh -lc "sed -n '1,220p' instruction.md"
We run a small caching layer in front of an expensive service, and I have captured a trace of operations that hit it. I need you to replay that trace exactly and report what the cache ends up doing. The catch is that this is not a plain least-recently-used cache. It is segmented, entries expire on a logical clock, the capacity is measured in weight rather than in a count of keys, and admission of a new key is gated by how often that key has been seen. The eviction behaviour is therefore fussier than the textbook version, so please follow the rules below to the letter, because several of them are exactly where a casual implementation goes wrong. The trace lives at data/operations.json. It is a JSON object. The field capacity is a positive integer: it is the total weight budget the whole cache is allowed to hold. The field protected_capacity is a positive integer no larger than capacity: it is the weight budget of the protected segment specifically. The field default_ttl is a positive integer used to compute expiry times, explained below. The field miss is an integer that you must return as the result of any lookup that does not find a live entry, instead of the conventional minus one. The field reset_interval is a positive integer that controls how often the frequency estimates are aged, explained below. The field operations is a list of operations to apply in order. A write looks like the four element list put, then an integer key, then an integer value, then an integer cost of at least one, which is that entry's weight. A read looks like the two element list get, then an integer key. There is a logical clock. It starts at zero, and it advances by one just before each operation is processed, so the first operation in the trace happens at clock time one, the second at time two, and so on. Whenever an entry is written or is successfully read, its expiry time is set to the current clock time plus default_ttl. An entry is considered expired, and must be treated as if … (+7746 chars truncated)
/bin/zsh -lc "sed -n '1,200p' task.toml"
/bin/zsh -lc "sed -n '1,200p' task.toml"
version = "1.0" difficulty = "hard" category = "swe" tags = ["data-structures", "lru-cache", "segmented-cache", "ttl-expiry", "weighted-eviction", "simulation", "python"] [verifier] timeout_sec = 120.0 [agent] timeout_sec = 600.0 [environment] build_timeout_sec = 600.0 cpus = 1 memory = "2G" storage = "4G"
(empty file)
(empty file)
(empty file)
(empty file)
/bin/zsh -lc 'python3 -m py_compile main.py'
/bin/zsh -lc 'python3 -m py_compile main.py'
/bin/zsh -lc 'python3 main.py && python3 -m json.tool output/result.json'
/bin/zsh -lc 'python3 main.py && python3 -m json.tool output/result.json'
{
"get_results": [
100,
200,
100,
300,
100,
200,
-1,
400,
100,
200,
-1,
800,
-1
],
"final_probation": [
[
2,
200
]
],
"final_protected": [
[
1,
150
],
[
8,
800
]
],
"total_weight": 5,
"rejected": 2
}
/bin/zsh -lc 'git diff -- main.py output/result.json'
/bin/zsh -lc 'git diff -- main.py output/result.json'
diff --git a/main.py b/output/result.json
index abf097a..2a9a0e3 100644
--- a/main.py
+++ b/output/result.json
@@ -1,202 +1 @@
-import json
-import os
-from collections import OrderedDict, defaultdict
-from dataclasses import dataclass
-
-
-@dataclass
-class Entry:
- value: int
- cost: int
- expires_at: int
-
-
-class SegmentedCache:
- def __init__(self, capacity, protected_capacity, default_ttl, miss, reset_interval):
- self.capacity = capacity
- self.protected_capacity = protected_capacity
- self.default_ttl = default_ttl
- self.miss = miss
- self.reset_interval = reset_interval
-
- self.clock = 0
- self.processed = 0
- self.rejected = 0
- self.get_results = []
-
- self.probation = OrderedDict()
- self.protected = OrderedDict()
- self.frequency = defaultdict(int)
-
- def total_weight(self):
- return self.segment_weight(self.probation) + self.segment_weight(self.protected)
-
- @staticmethod
- def segment_weight(segment):
- return sum(entry.cost for entry in segment.values())
-
- def sweep_expired(self):
- self._sweep_segment(self.probation)
- self._sweep_segment(self.protected)
-
- def _sweep_segment(self, segment):
- expired = [key for key, entry in segment.items() if entry.expires_at <= self.clock]
- for key in expired:
- del segment[key]
-
- def process(self, operation):
- self.clock += 1
- self.sweep_expired()
-
- op = operation[0]
- key = operation[1]
- self.frequency[key] += 1
-
- if op == "get":
- self.get(key)
- elif op == "put":
- _, _, value, cost = operation
- self.put(key, value, cost)
- else:
- raise ValueError(f"unknown operation: {op}")
-
- self.processed += 1
- if self.processed % self.reset_interval == 0:
- self.age_frequencies()
-
- def get(self, key):
-
… (+4832 chars truncated)/bin/zsh -lc "python3 - <<'PY'
import json
with open('data/operations.json') as f:
data=json.load(f)
for i, op in enumerate(data['operations'], 1):
print(i, op)
PY"/bin/zsh -lc "python3 - <<'PY'
import json
with open('data/operations.json') as f:
data=json.load(f)
for i, op in enumerate(data['operations'], 1):
print(i, op)
PY"1 ['put', 1, 100, 2] 2 ['put', 2, 200, 2] 3 ['put', 3, 300, 1] 4 ['get', 1] 5 ['get', 2] 6 ['get', 1] 7 ['put', 4, 400, 2] 8 ['get', 3] 9 ['get', 1] 10 ['put', 5, 500, 2] 11 ['get', 2] 12 ['get', 99] 13 ['put', 6, 600, 3] 14 ['get', 4] 15 ['put', 7, 700, 4] 16 ['get', 1] 17 ['get', 2] 18 ['put', 8, 800, 1] 19 ['get', 3] 20 ['put', 1, 150, 2] 21 ['get', 8] 22 ['get', 77]
/bin/zsh -lc 'git status --short'
/bin/zsh -lc 'git diff -- main.py'
/bin/zsh -lc 'git status --short'
fatal: not a git repository (or any of the parent directories): .git
/bin/zsh -lc 'git diff -- main.py'
warning: Not a git repository. Use --no-index to compare two paths outside a working tree
usage: git diff --no-index [<options>] <path> <path>
Diff output format options
-p, --patch generate patch
-s, --no-patch suppress diff output
-u generate patch
-U, --unified[=<n>] generate diffs with <n> lines context
-W, --[no-]function-context
generate diffs with <n> lines context
--raw generate the diff in raw format
--patch-with-raw synonym for '-p --raw'
--patch-with-stat synonym for '-p --stat'
--numstat machine friendly --stat
--shortstat output only the last line of --stat
-X, --dirstat[=<param1>,<param2>...]
output the distribution of relative amount of changes for each sub-directory
--cumulative synonym for --dirstat=cumulative
--dirstat-by-file[=<param1>,<param2>...]
synonym for --dirstat=files,<param1>,<param2>...
--check warn if changes introduce conflict markers or whitespace errors
--summary condensed summary such as creations, renames and mode changes
--name-only show only names of changed files
--name-status show only names and status of changed files
--stat[=<width>[,<name-width>[,<count>]]]
generate diffstat
--stat-width <width> generate diffstat with a given width
--stat-name-width <width>
generate diffstat with a given name width
--stat-graph-width <width>
generate diffstat with a given graph width
--stat-count <count> generate diffstat with limited lines
--[no-]compact-summary
generate compact summary in diffstat
--binary output a binary diff that can be applied
--[no-]full-index show full pre- and post-image object names o
… (+5365 chars truncated)/bin/zsh -lc "python3 - <<'PY'
import json
from pathlib import Path
result = json.loads(Path('output/result.json').read_text())
print(list(result))
print('gets', len(result['get_results']))
print('probation', result['final_probation'])
print('protected', result['final_protected'])
print('total_weight', result['total_weight'])
print('rejected', result['rejected'])
PY"/bin/zsh -lc "python3 - <<'PY'
import json
from pathlib import Path
result = json.loads(Path('output/result.json').read_text())
print(list(result))
print('gets', len(result['get_results']))
print('probation', result['final_probation'])
print('protected', result['final_protected'])
print('total_weight', result['total_weight'])
print('rejected', result['rejected'])
PY"['get_results', 'final_probation', 'final_protected', 'total_weight', 'rejected'] gets 13 probation [[2, 200]] protected [[1, 150], [8, 800]] total_weight 5 rejected 2
/bin/zsh -lc 'ls -l output/result.json'
/bin/zsh -lc 'ls -l output/result.json'
-rw-r--r-- 1 jaykumar staff 185 Jun 17 16:09 output/result.json
/bin/zsh -lc "python3 - <<'PY'
import json
from pathlib import Path
with open('data/operations.json') as f:
data = json.load(f)
with open('output/result.json') as f:
result = json.load(f)
assert set(result) == {'get_results', 'final_probation', 'final_protected', 'total_weight', 'rejected'}
assert len(result['get_results']) == sum(1 for op in data['operations'] if op[0] == 'get')
assert Path('output/result.json').is_file()
print('validated')
PY"/bin/zsh -lc "python3 - <<'PY'
import json
from pathlib import Path
with open('data/operations.json') as f:
data = json.load(f)
with open('output/result.json') as f:
result = json.load(f)
assert set(result) == {'get_results', 'final_probation', 'final_protected', 'total_weight', 'rejected'}
assert len(result['get_results']) == sum(1 for op in data['operations'] if op[0] == 'get')
assert Path('output/result.json').is_file()
print('validated')
PY"validated
============================= test session starts ============================== platform darwin -- Python 3.12.4, pytest-8.4.1, pluggy-1.6.0 -- /Library/Frameworks/Python.framework/Versions/3.12/bin/python3 cachedir: .pytest_cache rootdir: <tmp>/workspace plugins: anyio-4.12.1, respx-0.22.0, mock-3.15.1, asyncio-0.21.1 asyncio: mode=Mode.STRICT collecting ... collected 13 items tests/test_outputs.py::test_output_exists PASSED [ 7%] tests/test_outputs.py::test_shipped_input_correct PASSED [ 15%] tests/test_outputs.py::test_shipped_exercises_the_gate PASSED [ 23%] tests/test_outputs.py::test_shipped_invariants PASSED [ 30%] tests/test_outputs.py::test_hidden_inputs[3] PASSED [ 38%] tests/test_outputs.py::test_hidden_inputs[4] PASSED [ 46%] tests/test_outputs.py::test_hidden_inputs[8] PASSED [ 53%] tests/test_outputs.py::test_hidden_inputs[11] PASSED [ 61%] tests/test_outputs.py::test_hidden_inputs[13] PASSED [ 69%] tests/test_outputs.py::test_hidden_inputs[16] PASSED [ 76%] tests/test_outputs.py::test_hidden_inputs[33] PASSED [ 84%] tests/test_outputs.py::test_hidden_inputs[47] PASSED [ 92%] tests/test_outputs.py::test_hidden_inputs_are_nontrivial PASSED [100%] ============================== 13 passed in 0.26s ==============================
Reproduce this trial: git checkout 2f94510 && PYTHONPATH=src python3 scripts/build_site.py , then open trial/trial_44c1f34582fc4130. Re-running the agent live requires EVAL_PLATFORM_ENABLE_OAUTH_SMOKE=1 and is non-deterministic.
Trial trial_44c1f34582fc4130 · verifier authoritative; classifier explanatory.