Run Detail
completedqwen3.5-9b30 answersRecorded for these videos
Provider
openrouter
Challenge Version
v1.0
Turns
30
Duration
1648.6s
Total Tokens
428,042
Input Tokens
3,984
Output Tokens
424,058
Reasoning Tokens
421,457
Reasoning Effort
default
Est. Cost
$0.0554
Started
11/4/2026, 10:47:04 PM
OR Provider
Darkbloom
Finish Reason
stop
Generation ID
gen-1793833935-zCmCMJb8tlmMGU1B5C4M
Turns (30)
Turn #1Raw score: 1
86 in3,821 out3,768 reasoning3,907 total82.2s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write is_leap(year: int) -> bool to return whether year is a leap year in the Gregorian calendar.
assistant
def is_leap(year: int) -> bool:
return (year % 400 == 0) or (year % 4 == 0 and year % 100 != 0)
Turn #2Raw score: 1
86 in429 out378 reasoning515 total7.4s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write is_leap(year: int) -> bool to return whether year is a leap year in the Gregorian calendar.
assistant
def is_leap(year: int) -> bool:
return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0)
Turn #3Raw score: 1
86 in5,567 out5,516 reasoning5,653 total93.2s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write is_leap(year: int) -> bool to return whether year is a leap year in the Gregorian calendar.
assistant
def is_leap(year: int) -> bool:
return year % 400 == 0 or (year % 4 == 0 and year % 100 != 0)
Turn #4Raw score: 1
122 in593 out475 reasoning715 total13.5s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write rle(s: str) -> str to perform run-length encoding on s. Replace each run of consecutive identical characters with that character followed by the run length. rle("aaabcc") returns "a3b1c2" and rle("") returns "".
assistant
def rle(s: str) -> str:
if not s:
return ""
result = []
current_char = s[0]
count = 1
for char in s[1:]:
if char == current_char:
count += 1
else:
result.append(f"{current_char}{count}")
current_char = char
count = 1
result.append(f"{current_char}{count}")
return "".join(result)
Turn #5Raw score: 1
122 in10,933 out10,819 reasoning11,055 total137.9s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write rle(s: str) -> str to perform run-length encoding on s. Replace each run of consecutive identical characters with that character followed by the run length. rle("aaabcc") returns "a3b1c2" and rle("") returns "".
assistant
def rle(s: str) -> str:
if not s:
return ""
result = []
prev = s[0]
count = 1
for char in s[1:]:
if char == prev:
count += 1
else:
result.append(f"{prev}{count}")
prev = char
count = 1
result.append(f"{prev}{count}")
return "".join(result)
Turn #6Raw score: 1
122 in7,626 out7,502 reasoning7,748 total121.1s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write rle(s: str) -> str to perform run-length encoding on s. Replace each run of consecutive identical characters with that character followed by the run length. rle("aaabcc") returns "a3b1c2" and rle("") returns "".
assistant
def rle(s: str) -> str:
if not s:
return ""
result = []
current_char = s[0]
current_count = 1
for char in s[1:]:
if char == current_char:
current_count += 1
else:
result.append(f"{current_char}{current_count}")
current_char = char
current_count = 1
result.append(f"{current_char}{current_count}")
return "".join(result)
Turn #7Raw score: 1
117 in6,613 out6,552 reasoning6,730 total140.0s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write chunks(items, n: int) -> list[list]. items is an iterable, which may be a generator. Return consecutive lists of n elements, where the last list may be shorter. Raise ValueError when n is less than 1.
assistant
import itertools
def chunks(items, n: int) -> list[list]:
if n < 1:
raise ValueError("n must be at least 1")
return [list(batch) for batch in itertools.batched(items, n)]
Turn #8Raw score: 1
117 in9,945 out9,851 reasoning10,062 total128.8s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write chunks(items, n: int) -> list[list]. items is an iterable, which may be a generator. Return consecutive lists of n elements, where the last list may be shorter. Raise ValueError when n is less than 1.
assistant
import itertools
def chunks(items, n: int) -> list[list]:
if n < 1:
raise ValueError("n must be >= 1")
it = iter(items)
result = []
while True:
chunk = list(itertools.islice(it, n))
if not chunk:
break
result.append(chunk)
return result
Turn #9Raw score: 1
117 in10,603 out10,504 reasoning10,720 total210.4s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write chunks(items, n: int) -> list[list]. items is an iterable, which may be a generator. Return consecutive lists of n elements, where the last list may be shorter. Raise ValueError when n is less than 1.
assistant
import itertools
def chunks(items, n: int) -> list[list]:
if n < 1:
raise ValueError("n must be greater than or equal to 1")
it = iter(items)
result = []
while True:
chunk = list(itertools.islice(it, n))
if not chunk:
break
result.append(chunk)
return result
Turn #10Raw score: 0
155 in32,000 out32,000 reasoning32,155 total450.8s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write round_half_up(value: str, digits: int) -> str. The string value represents a decimal number. Round it to digits decimal places, rounding exact ties away from zero based on the exact value written in value. Return a string with exactly digits decimal places, and omit the decimal point when digits is 0. round_half_up("2.675", 2) returns "2.68".
Turn #11Raw score: 0
155 in32,000 out32,000 reasoning32,155 total897.1s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write round_half_up(value: str, digits: int) -> str. The string value represents a decimal number. Round it to digits decimal places, rounding exact ties away from zero based on the exact value written in value. Return a string with exactly digits decimal places, and omit the decimal point when digits is 0. round_half_up("2.675", 2) returns "2.68".
Turn #12Raw score: 0
155 in32,000 out32,000 reasoning32,155 total450.2s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write round_half_up(value: str, digits: int) -> str. The string value represents a decimal number. Round it to digits decimal places, rounding exact ties away from zero based on the exact value written in value. Return a string with exactly digits decimal places, and omit the decimal point when digits is 0. round_half_up("2.675", 2) returns "2.68".
Turn #13Raw score: 0
150 in32,000 out31,999 reasoning32,150 total465.6s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write parse_kv(line: str) -> dict[str, str]. The string line contains key=value pairs separated by one or more spaces. A value may be enclosed in double quotes; if so, it may contain spaces and =, and the quotes are not included in the parsed value. A value may be empty, as in c=. If a key repeats, use the last value. Return {} for an empty line.
Turn #14Raw score: 0
150 in32,000 out32,000 reasoning32,150 total455.1s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write parse_kv(line: str) -> dict[str, str]. The string line contains key=value pairs separated by one or more spaces. A value may be enclosed in double quotes; if so, it may contain spaces and =, and the quotes are not included in the parsed value. A value may be empty, as in c=. If a key repeats, use the last value. Return {} for an empty line.
Turn #15Raw score: 0
150 in32,000 out32,000 reasoning32,150 total477.4s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write parse_kv(line: str) -> dict[str, str]. The string line contains key=value pairs separated by one or more spaces. A value may be enclosed in double quotes; if so, it may contain spaces and =, and the quotes are not included in the parsed value. A value may be empty, as in c=. If a key repeats, use the last value. Return {} for an empty line.
Turn #16Raw score: 1
136 in5,089 out4,949 reasoning5,225 total50.0s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write merge_intervals(intervals: list[tuple[int, int]]) -> list[tuple[int, int]]. The input intervals may be in any order. Merge intervals that overlap or touch, so (1, 2) and (2, 3) become (1, 3). Return the merged intervals as tuples sorted by start, and leave the input list unchanged.
assistant
def merge_intervals(intervals: list[tuple[int, int]]) -> list[tuple[int, int]]:
if not intervals:
return []
sorted_intervals = sorted(intervals)
merged = []
current_start, current_end = sorted_intervals[0]
for start, end in sorted_intervals[1:]:
if start <= current_end:
current_end = max(current_end, end)
else:
merged.append((current_start, current_end))
current_start, current_end = start, end
merged.append((current_start, current_end))
return merged
Turn #17Raw score: 1
136 in6,141 out5,993 reasoning6,277 total118.7s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write merge_intervals(intervals: list[tuple[int, int]]) -> list[tuple[int, int]]. The input intervals may be in any order. Merge intervals that overlap or touch, so (1, 2) and (2, 3) become (1, 3). Return the merged intervals as tuples sorted by start, and leave the input list unchanged.
assistant
def merge_intervals(intervals: list[tuple[int, int]]) -> list[tuple[int, int]]:
if not intervals:
return []
sorted_intervals = sorted(intervals, key=lambda x: x[0])
merged = []
current_start, current_end = sorted_intervals[0]
for start, end in sorted_intervals[1:]:
if start <= current_end:
current_end = max(current_end, end)
else:
merged.append((current_start, current_end))
current_start, current_end = start, end
merged.append((current_start, current_end))
return merged
Turn #18Raw score: 1
136 in3,220 out3,064 reasoning3,356 total33.8s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write merge_intervals(intervals: list[tuple[int, int]]) -> list[tuple[int, int]]. The input intervals may be in any order. Merge intervals that overlap or touch, so (1, 2) and (2, 3) become (1, 3). Return the merged intervals as tuples sorted by start, and leave the input list unchanged.
assistant
def merge_intervals(intervals: list[tuple[int, int]]) -> list[tuple[int, int]]:
if not intervals:
return []
sorted_intervals = sorted(intervals, key=lambda i: i[0])
merged: list[tuple[int, int]] = []
current_start, current_end = sorted_intervals[0]
for start, end in sorted_intervals[1:]:
if start <= current_end:
current_end = max(current_end, end)
else:
merged.append((current_start, current_end))
current_start, current_end = start, end
merged.append((current_start, current_end))
return merged
Turn #19Raw score: 1
112 in696 out565 reasoning808 total10.6s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write add_months(d: datetime.date, months: int) -> datetime.date to add months calendar months to d. months may be negative. If the day does not exist in the target month, use the last day of that month.
assistant
from datetime import date
import calendar
def add_months(d: date, months: int) -> date:
year = d.year
month = d.month + months
while month > 12:
month -= 12
year += 1
while month <= 0:
month += 12
year -= 1
try:
return date(year, month, d.day)
except ValueError:
_, last_day = calendar.monthrange(year, month)
return date(year, month, last_day)
Turn #20Raw score: 1
112 in1,000 out875 reasoning1,112 total9.9s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write add_months(d: datetime.date, months: int) -> datetime.date to add months calendar months to d. months may be negative. If the day does not exist in the target month, use the last day of that month.
assistant
import datetime
from calendar import monthrange
def add_months(d: datetime.date, months: int) -> datetime.date:
year = d.year
month = d.month + months
while month <= 0:
month += 12
year -= 1
while month > 12:
month -= 12
year += 1
_, max_day = monthrange(year, month)
day = min(d.day, max_day)
return datetime.date(year, month, day)
Turn #21Raw score: 1
112 in779 out655 reasoning891 total7.8s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write add_months(d: datetime.date, months: int) -> datetime.date to add months calendar months to d. months may be negative. If the day does not exist in the target month, use the last day of that month.
assistant
from datetime import date
import calendar
def add_months(d: date, months: int) -> date:
year, month, day = d.year, d.month, d.day
total_months = year * 12 + (month - 1) + months
new_year = total_months // 12
new_month = (total_months % 12) + 1
max_day = calendar.monthrange(new_year, new_month)[1]
return date(new_year, new_month, min(day, max_day))
Turn #22Raw score: 1
136 in6,230 out6,134 reasoning6,366 total88.5s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write top_k_words(text: str, k: int) -> list[tuple[str, int]]. A word is a maximal sequence of ASCII letters and apostrophes. Words compare case-insensitively and are returned in lowercase. Return the k most frequent words as (word, count) tuples, sorted by highest count first, breaking ties alphabetically by word.
assistant
import re
from collections import Counter
def top_k_words(text: str, k: int) -> list[tuple[str, int]]:
matches = re.findall(r"[A-Za-z']+", text)
words = [w.lower() for w in matches]
counts = Counter(words)
return sorted(counts.items(), key=lambda item: (-item[1], item[0]))[:k]
Turn #23Raw score: 1
136 in9,508 out9,412 reasoning9,644 total112.5s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write top_k_words(text: str, k: int) -> list[tuple[str, int]]. A word is a maximal sequence of ASCII letters and apostrophes. Words compare case-insensitively and are returned in lowercase. Return the k most frequent words as (word, count) tuples, sorted by highest count first, breaking ties alphabetically by word.
assistant
import re
from collections import Counter
def top_k_words(text: str, k: int) -> list[tuple[str, int]]:
words = re.findall(r"[A-Za-z']+", text)
words = [w.lower() for w in words]
counts = Counter(words)
return sorted(counts.items(), key=lambda item: (-item[1], item[0]))[:k]
Turn #24Raw score: 1
136 in6,285 out6,182 reasoning6,421 total72.1s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write top_k_words(text: str, k: int) -> list[tuple[str, int]]. A word is a maximal sequence of ASCII letters and apostrophes. Words compare case-insensitively and are returned in lowercase. Return the k most frequent words as (word, count) tuples, sorted by highest count first, breaking ties alphabetically by word.
assistant
import re
from collections import Counter
def top_k_words(text: str, k: int) -> list[tuple[str, int]]:
words = re.findall(r"[A-Za-z']+", text, flags=re.ASCII)
counts = Counter(word.lower() for word in words)
items = list(counts.items())
items.sort(key=lambda item: (-item[1], item[0]))
return items[:k]
Turn #25Raw score: 0
172 in14,611 out14,317 reasoning14,783 total146.1s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write flatten(obj: dict, sep: str = ".") -> dict. Flatten nested dicts and lists into a single level, joining keys with sep and using list indices as keys. Keep an empty dict or empty list as the value at its key. flatten({"a": {"b": 1}, "c": [{"d": 2}, 3], "e": {}}) returns {"a.b": 1, "c.0.d": 2, "c.1": 3, "e": {}}.
assistant
from typing import Any
def flatten(obj: dict, sep: str = ".") -> dict:
result = {}
def _helper(data: Any, prefix: str, current_sep: str):
nonlocal result
if isinstance(data, dict):
if not data:
result[prefix] = data
return
for k, v in data.items():
if prefix == "":
new_prefix = k
else:
new_prefix = f"{prefix}{current_sep}{k}"
if isinstance(v, dict) or isinstance(v, list):
_helper(v, new_prefix, current_sep)
else:
result[new_prefix] = v
elif isinstance(data, list):
if not data:
result[prefix] = data
return
for idx, item in enumerate(data):
if prefix == "":
new_prefix = str(idx)
else:
new_prefix = f"{prefix}{current_sep}{idx}"
if isinstance(item, dict) or isinstance(item, list):
_helper(item, new_prefix, current_sep)
else:
result[new_prefix] = item
else:
result[prefix] = data
_helper(obj, "", sep)
return result
Turn #26Raw score: 0
172 in32,000 out32,000 reasoning32,172 total360.7s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write flatten(obj: dict, sep: str = ".") -> dict. Flatten nested dicts and lists into a single level, joining keys with sep and using list indices as keys. Keep an empty dict or empty list as the value at its key. flatten({"a": {"b": 1}, "c": [{"d": 2}, 3], "e": {}}) returns {"a.b": 1, "c.0.d": 2, "c.1": 3, "e": {}}.
Turn #27Raw score: 0
172 in32,000 out31,999 reasoning32,172 total357.5s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write flatten(obj: dict, sep: str = ".") -> dict. Flatten nested dicts and lists into a single level, joining keys with sep and using list indices as keys. Keep an empty dict or empty list as the value at its key. flatten({"a": {"b": 1}, "c": [{"d": 2}, 3], "e": {}}) returns {"a.b": 1, "c.0.d": 2, "c.1": 3, "e": {}}.
Turn #28Raw score: 0
142 in32,000 out32,000 reasoning32,142 total361.6s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write lru(maxsize: int), a decorator factory that caches a function's results by its positional arguments without using functools.lru_cache or functools.cache. It stores at most maxsize results. When the cache is full, evict the least recently used result. A cache hit counts as a use. The decorated function must preserve its original __name__.
Turn #29Raw score: 1
142 in15,905 out15,752 reasoning16,047 total326.0s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write lru(maxsize: int), a decorator factory that caches a function's results by its positional arguments without using functools.lru_cache or functools.cache. It stores at most maxsize results. When the cache is full, evict the least recently used result. A cache hit counts as a use. The decorated function must preserve its original __name__.
assistant
import collections
def lru(maxsize: int):
if maxsize <= 0:
raise ValueError("maxsize must be greater than 0")
def decorator(func):
cache = collections.OrderedDict()
def wrapper(*args, **kwargs):
key = args
if key in cache:
cache.move_to_end(key)
return cache[key]
else:
while len(cache) >= maxsize:
cache.popitem(last=False)
cache[key] = func(*args, **kwargs)
return cache[key]
wrapper.__name__ = func.__name__
return wrapper
return decorator
Turn #30Raw score: 1
142 in10,464 out10,196 reasoning10,606 total138.0s
user
Write Python 3.13 code. Answer with one ```python code block that defines the function described below. Use only the standard library. Do not include explanations, examples, tests, input() calls, or print() calls.
Write lru(maxsize: int), a decorator factory that caches a function's results by its positional arguments without using functools.lru_cache or functools.cache. It stores at most maxsize results. When the cache is full, evict the least recently used result. A cache hit counts as a use. The decorated function must preserve its original __name__.
assistant
from collections import OrderedDict
from typing import Callable, Any
def lru(maxsize: int):
if maxsize <= 0:
return lambda f: f
def decorator(func: Callable):
cache: OrderedDict[tuple, Any] = OrderedDict()
def wrapper(*args: Any, **kwargs: Any):
# Cache key is derived from positional arguments only
key = args
if key in cache:
# Cache hit: mark as recently used
cache.move_to_end(key)
return cache[key]
else:
# Cache miss: compute and store
result = func(*args, **kwargs)
cache[key] = result
# Evict least recently used if cache exceeds maxsize
if len(cache) > maxsize:
cache.popitem(last=False)
return result
# Preserve original function metadata, especially __name__
wrapper.__name__ = func.__name__
wrapper.__doc__ = func.__doc__
wrapper.__module__ = func.__module__
wrapper.__qualname__ = func.__qualname__
wrapper.__wrapped__ = func
return wrapper
return decorator