trace_id string | example_id int64 | rollout_number int64 | task null | prompt list | completion list | answer null | reward float64 | score null | correct null | num_steps null | total_time float64 | latency_ms int64 | created_at string | info dict | exact_match_reward float64 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
hosted-1 | 0 | 1 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>[1, 2]</answer>\n",
"reasoning_content": "\nThe function `append_to` has a mutable default argument `to=[]`. This means the same list is reused across all calls. On the first call `append_to(1)`, the list becomes `[1]`. On the second call `append_to(2)`, the ... | null | 1 | null | null | null | 5.248952 | 5,249 | 2026-06-03T13:40:57.946697Z | {
"id": "mutable-default-arg",
"difficulty": "medium",
"category": "mutable_default",
"timing": {
"start_time": 1780494051.70881,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.70881,
"end": 1780494054.3893857,
"duration"... | 1 |
hosted-2 | 0 | 2 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>[1, 2]</answer>\n",
"reasoning_content": "\nThis code demonstrates a classic Python gotcha with mutable default arguments. Let me trace through it:\n\n1. The function `append_to` has a default argument `to=[]`. In Python, default arguments are evaluated once ... | null | 1 | null | null | null | 5.24887 | 5,249 | 2026-06-03T13:40:57.946697Z | {
"id": "mutable-default-arg",
"difficulty": "medium",
"category": "mutable_default",
"timing": {
"start_time": 1780494051.7089033,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7089033,
"end": 1780494054.4941995,
"durat... | 1 |
hosted-3 | 0 | 3 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n[1, 2]\n",
"reasoning_content": "\nOkay, let's see. The user is asking what the second call to append_to(2) will print. The code is:\n\ndef append_to(element, to=[]):\n to.append(element)\n return to\n\nappend_to(1)\nprint(append_to(2))\n\nHmm, I remember that ... | null | 1 | null | null | null | 5.248815 | 5,249 | 2026-06-03T13:40:57.946697Z | {
"id": "mutable-default-arg",
"difficulty": "medium",
"category": "mutable_default",
"timing": {
"start_time": 1780494051.708967,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.708967,
"end": 1780494054.6692543,
"duratio... | 1 |
hosted-4 | 0 | 4 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n[1, 2]\n",
"reasoning_content": "\nOkay, let's see. The user is asking what the code prints on the second call. The code defines a function append_to with a default argument to=[]. I remember that in Python, default arguments are evaluated once when the function is d... | null | 1 | null | null | null | 5.24878 | 5,249 | 2026-06-03T13:40:57.946697Z | {
"id": "mutable-default-arg",
"difficulty": "medium",
"category": "mutable_default",
"timing": {
"start_time": 1780494051.709029,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.709029,
"end": 1780494055.1804361,
"duratio... | 1 |
hosted-5 | 0 | 5 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n[1, 2]\n",
"reasoning_content": "\nOkay, let's see. The user is asking what the code prints on the second call. The code defines a function append_to with a default argument to=[]. I remember that in Python, default arguments are evaluated once when the function is d... | null | 1 | null | null | null | 5.248815 | 5,249 | 2026-06-03T13:40:57.946697Z | {
"id": "mutable-default-arg",
"difficulty": "medium",
"category": "mutable_default",
"timing": {
"start_time": 1780494051.709087,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.709087,
"end": 1780494054.8744245,
"duratio... | 1 |
hosted-6 | 0 | 6 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n</think>\n<answer>[1, 2]</answer>\n",
"reasoning_content": "\nThe function `append_to` has a mutable default argument `to=[]`. This list persists across calls. On the first call `append_to(1)`, the list becomes `[1]`. On the second call `append_to(2)`, the list becom... | null | 1 | null | null | null | 5.248772 | 5,249 | 2026-06-03T13:40:57.946697Z | {
"id": "mutable-default-arg",
"difficulty": "medium",
"category": "mutable_default",
"timing": {
"start_time": 1780494051.7091439,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7091439,
"end": 1780494053.62706,
"duratio... | 1 |
hosted-7 | 0 | 7 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>[1, 2]</answer>\n",
"reasoning_content": "\nOkay, let's see. The user is asking what the code prints on the second call. The function append_to has a default argument to=[]. I remember that in Python, default arguments are evaluated once when the function is ... | null | 1 | null | null | null | 5.24873 | 5,249 | 2026-06-03T13:40:57.946697Z | {
"id": "mutable-default-arg",
"difficulty": "medium",
"category": "mutable_default",
"timing": {
"start_time": 1780494051.7091966,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7091966,
"end": 1780494056.9551172,
"durat... | 1 |
hosted-15 | 2 | 1 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>(12, 0)</answer>\n",
"reasoning_content": "\nThe code creates a generator, sums it twice, but a generator can only be iterated once. The first sum consumes it, so the second sum returns 0.\n",
"tool_calls": [],
"tool_call_id": ""
}
] | null | 1 | null | null | null | 14.484731 | 14,485 | 2026-06-03T13:41:10.411177Z | {
"id": "generator-exhaustion",
"difficulty": "hard",
"category": "generator",
"timing": {
"start_time": 1780494051.7432845,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7432845,
"end": 1780494053.4752674,
"duration": 1... | 1 |
hosted-16 | 2 | 2 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>(12, 0)</answer>\n",
"reasoning_content": "\nThe code creates a generator `gen` that doubles each element in the list. When `sum(gen)` is first called, it consumes the generator, resulting in `total1 = 12`. The second `sum(gen)` call has no elements left in t... | null | 1 | null | null | null | 14.484593 | 14,485 | 2026-06-03T13:41:10.411177Z | {
"id": "generator-exhaustion",
"difficulty": "hard",
"category": "generator",
"timing": {
"start_time": 1780494051.7434342,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7434342,
"end": 1780494065.4067066,
"duration": 1... | 1 |
hosted-17 | 2 | 3 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n(12, 0)\n",
"reasoning_content": "\nLet me trace through this code step by step.\n\n1. The function `double_sum` takes a list `lst` as input\n2. It creates a generator expression `gen = (x * 2 for x in lst)` that will double each element\n3. `total1 = sum(gen)` consu... | null | 1 | null | null | null | 14.484471 | 14,484 | 2026-06-03T13:41:10.411177Z | {
"id": "generator-exhaustion",
"difficulty": "hard",
"category": "generator",
"timing": {
"start_time": 1780494051.743565,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.743565,
"end": 1780494066.1701815,
"duration": 14.... | 1 |
hosted-18 | 2 | 4 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n(12, 0)\n",
"reasoning_content": "\nLet me trace through this code:\n\n1. `double_sum([1, 2, 3])` is called\n2. A generator `gen = (x * 2 for x in lst)` is created - this will yield 2, 4, 6 when iterated\n3. `total1 = sum(gen)` - this consumes the generator, summing ... | null | 1 | null | null | null | 14.484359 | 14,484 | 2026-06-03T13:41:10.411177Z | {
"id": "generator-exhaustion",
"difficulty": "hard",
"category": "generator",
"timing": {
"start_time": 1780494051.743684,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.743684,
"end": 1780494066.2256389,
"duration": 14.... | 1 |
hosted-19 | 2 | 5 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>(12, 0)</answer>\n",
"reasoning_content": "\nI need to trace through this Python code and see what it prints.\n\nThe function `double_sum` takes a list `lst` and creates a generator expression `gen = (x * 2 for x in lst)`. Then it calls `sum(gen)` twice and r... | null | 1 | null | null | null | 14.484255 | 14,484 | 2026-06-03T13:41:10.411177Z | {
"id": "generator-exhaustion",
"difficulty": "hard",
"category": "generator",
"timing": {
"start_time": 1780494051.7437959,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7437959,
"end": 1780494055.8001063,
"duration": 4... | 1 |
hosted-20 | 2 | 6 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n(12, 0)\n",
"reasoning_content": "\nLet me trace through this code step by step.\n\n1. The function `double_sum` takes a list `lst` as input\n2. It creates a generator `gen = (x * 2 for x in lst)` - this is a generator expression\n3. `total1 = sum(gen)` - this consum... | null | 1 | null | null | null | 14.484157 | 14,484 | 2026-06-03T13:41:10.411177Z | {
"id": "generator-exhaustion",
"difficulty": "hard",
"category": "generator",
"timing": {
"start_time": 1780494051.7439024,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7439024,
"end": 1780494054.8362005,
"duration": 3... | 1 |
hosted-21 | 2 | 7 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>(12, 0)</answer>\n",
"reasoning_content": "\nThe code creates a generator that doubles each element. After the first `sum(gen)` consumes it, the generator is exhausted, so the second `sum(gen)` returns 0. The printed output is `(12, 0)`.\n",
"tool_calls":... | null | 1 | null | null | null | 14.484058 | 14,484 | 2026-06-03T13:41:10.411177Z | {
"id": "generator-exhaustion",
"difficulty": "hard",
"category": "generator",
"timing": {
"start_time": 1780494051.7440095,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7440095,
"end": 1780494053.3324623,
"duration": 1... | 1 |
hosted-22 | 3 | 1 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>5</answer>\n",
"reasoning_content": "\nLet me trace through the code:\n\n1. `sum_digits(123)`:\n - n = 123, which is >= 10\n - return 123 % 10 + sum_digits(123 // 10)\n - return 3 + sum_digits(12)\n\n2. `sum_digits(12)`:\n - n = 12, which is >= 10\n ... | null | 1 | null | null | null | 15.744236 | 15,744 | 2026-06-03T13:41:10.411177Z | {
"id": "wrong-base-case",
"difficulty": "medium",
"category": "recursion",
"timing": {
"start_time": 1780494051.744446,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.744446,
"end": 1780494054.4004848,
"duration": 2.6560... | 1 |
hosted-23 | 3 | 2 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>5</answer>\n",
"reasoning_content": "\nLet me trace through the code:\n\n1. `sum_digits(123)` is called\n2. 123 >= 10, so it returns `123 % 10 + sum_digits(123 // 10)` = `3 + sum_digits(12)`\n3. `sum_digits(12)` is called\n4. 12 >= 10, so it returns `12 % 10 ... | null | 1 | null | null | null | 15.74414 | 15,744 | 2026-06-03T13:41:10.411177Z | {
"id": "wrong-base-case",
"difficulty": "medium",
"category": "recursion",
"timing": {
"start_time": 1780494051.7445579,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7445579,
"end": 1780494055.2895362,
"duration": 3.54... | 1 |
hosted-24 | 3 | 3 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>5</answer>\n",
"reasoning_content": "\nThe function `sum_digits` recursively sums the digits of `n`. For `n=123`, it returns `3 + sum_digits(12)`. `sum_digits(12)` returns `2 + sum_digits(1)`, and `sum_digits(1)` returns `0` (since `1 < 10`). So total is `3 +... | null | 1 | null | null | null | 15.744053 | 15,744 | 2026-06-03T13:41:10.411177Z | {
"id": "wrong-base-case",
"difficulty": "medium",
"category": "recursion",
"timing": {
"start_time": 1780494051.7446585,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7446585,
"end": 1780494054.251142,
"duration": 2.506... | 1 |
hosted-25 | 3 | 4 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>5</answer>\n",
"reasoning_content": "\nLet me trace through the execution of this code.\n\nThe function `sum_digits(n)` is defined as:\n- If n < 10, return 0\n- Otherwise, return n % 10 + sum_digits(n // 10)\n\nWhen we call `sum_digits(123)`:\n1. 123 >= 10, s... | null | 1 | null | null | null | 15.743971 | 15,744 | 2026-06-03T13:41:10.411177Z | {
"id": "wrong-base-case",
"difficulty": "medium",
"category": "recursion",
"timing": {
"start_time": 1780494051.7447536,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7447536,
"end": 1780494056.252928,
"duration": 4.508... | 1 |
hosted-26 | 3 | 5 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>5</answer>\n",
"reasoning_content": "\nLet me trace through this code step by step.\n\nThe function `sum_digits(n)` is defined as:\n- If n < 10, return 0\n- Otherwise, return n % 10 + sum_digits(n // 10)\n\nI need to trace what `sum_digits(123)` returns.\n\n1... | null | 1 | null | null | null | 15.743889 | 15,744 | 2026-06-03T13:41:10.411177Z | {
"id": "wrong-base-case",
"difficulty": "medium",
"category": "recursion",
"timing": {
"start_time": 1780494051.7448485,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7448485,
"end": 1780494058.4650383,
"duration": 6.72... | 1 |
hosted-27 | 3 | 6 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>5</answer>\n",
"reasoning_content": "\nLet me trace through the code step by step.\n\nThe function `sum_digits(n)` is defined as follows:\n- If `n < 10`, return 0\n- Otherwise, return `n % 10 + sum_digits(n // 10)`\n\nWhen we call `sum_digits(123)`:\n1. 123 >... | null | 1 | null | null | null | 15.743801 | 15,744 | 2026-06-03T13:41:10.411177Z | {
"id": "wrong-base-case",
"difficulty": "medium",
"category": "recursion",
"timing": {
"start_time": 1780494051.7449493,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7449493,
"end": 1780494067.4837916,
"duration": 15.7... | 1 |
hosted-28 | 3 | 7 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>5</answer>\n",
"reasoning_content": "\nLet me trace through the code step by step.\n\nThe function `sum_digits(n)` is defined as:\n- If n < 10, return 0\n- Otherwise, return n % 10 + sum_digits(n // 10)\n\nWhen we call `sum_digits(123)`:\n- 123 is not < 10, s... | null | 1 | null | null | null | 15.743711 | 15,744 | 2026-06-03T13:41:10.411177Z | {
"id": "wrong-base-case",
"difficulty": "medium",
"category": "recursion",
"timing": {
"start_time": 1780494051.7450526,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7450526,
"end": 1780494055.1274555,
"duration": 3.38... | 1 |
hosted-8 | 4 | 1 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nThe function `max_value` finds the maximum value in a list using the `>` operator. The list contains strings: `['10', '9', '100']`. When comparing strings, Python uses lexicographic (dictionary) order. Comparing '10', '9... | null | 1 | null | null | null | 12.841738 | 12,842 | 2026-06-03T13:41:06.305830Z | {
"id": "string-lexicographic-max",
"difficulty": "medium",
"category": "string_comparison",
"timing": {
"start_time": 1780494051.7860107,
"setup": {
"start": 0,
"end": 0,
"duration": 0
},
"generation": {
"start": 1780494051.7860107,
"end": 1780494054.292486,
... | 1 |
hosted-9 | 4 | 2 | null | [
{
"role": "system",
"content": "You are a Python execution tracer. When shown a code snippet, trace through it step by step — paying close attention to Python-specific behaviour such as mutable default arguments, late-binding closures, generator exhaustion, and lexicographic vs numeric comparison. Always wr... | [
{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nThe function compares strings lexicographically. '9' comes after '10' and '100' in lexicographic order since it's longer and '1' < '9' for the first character. So '9' is the max.\n",
"tool_calls": [],
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"category": "string_comparison",
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{
"role": "assistant",
"content": "\n9\n",
"reasoning_content": "\nLet me trace through this code step by step.\n\n1. The function `max_value` takes a list `lst` as input\n2. It initializes `max_val` to the first element of the list\n3. It iterates through each item in the list\n4. For each item, if the... | null | 1 | null | null | null | 12.841406 | 12,841 | 2026-06-03T13:41:06.305830Z | {
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"category": "string_comparison",
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{
"role": "assistant",
"content": "\n<answer>100</answer>\n",
"reasoning_content": "\nThe code defines a function `max_value` that finds the maximum value in a list by comparing items sequentially. The list passed is `['10', '9', '100']`, which contains strings. String comparison in Python is lexicograp... | null | 0 | null | null | null | 12.841231 | 12,841 | 2026-06-03T13:41:06.305830Z | {
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"difficulty": "medium",
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{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nLet me trace through this code:\n\n1. The function `max_value` takes a list `lst` as input\n2. It initializes `max_val` to the first element of the list\n3. It iterates through each item in the list\n4. For each item, if... | null | 1 | null | null | null | 12.841069 | 12,841 | 2026-06-03T13:41:06.305830Z | {
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"difficulty": "medium",
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{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nThe function finds the maximum value by comparing strings lexicographically. Comparing '10', '9', '100' as strings: '9' > '10' because '9' > '1' at the first character. '9' is also greater than '100' because '9' > '1'. S... | null | 1 | null | null | null | 12.840832 | 12,841 | 2026-06-03T13:41:06.305830Z | {
"id": "string-lexicographic-max",
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{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nI need to trace through this code. The function `max_value` takes a list and finds the maximum value. It starts with `max_val = lst[0]`, then iterates through each item, updating `max_val` if the current item is greater.... | null | 1 | null | null | null | 12.840625 | 12,841 | 2026-06-03T13:41:06.305830Z | {
"id": "string-lexicographic-max",
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"category": "string_comparison",
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{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nThe function `max_value` finds the maximum value in a list using the `>` operator. The list contains strings: `['10', '9', '100']`. When comparing strings, Python uses lexicographic (dictionary) order. Comparing '10', '9... | null | 1 | null | null | null | 12.841738 | 12,842 | 2026-06-03T13:41:14.435720Z | {
"id": "string-lexicographic-max",
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{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nThe function compares strings lexicographically. '9' comes after '10' and '100' in lexicographic order since it's longer and '1' < '9' for the first character. So '9' is the max.\n",
"tool_calls": [],
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{
"role": "assistant",
"content": "\n9\n",
"reasoning_content": "\nLet me trace through this code step by step.\n\n1. The function `max_value` takes a list `lst` as input\n2. It initializes `max_val` to the first element of the list\n3. It iterates through each item in the list\n4. For each item, if the... | null | 1 | null | null | null | 12.841406 | 12,841 | 2026-06-03T13:41:14.435720Z | {
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"category": "string_comparison",
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{
"role": "assistant",
"content": "\n<answer>100</answer>\n",
"reasoning_content": "\nThe code defines a function `max_value` that finds the maximum value in a list by comparing items sequentially. The list passed is `['10', '9', '100']`, which contains strings. String comparison in Python is lexicograp... | null | 0 | null | null | null | 12.841231 | 12,841 | 2026-06-03T13:41:14.435720Z | {
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{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nLet me trace through this code:\n\n1. The function `max_value` takes a list `lst` as input\n2. It initializes `max_val` to the first element of the list\n3. It iterates through each item in the list\n4. For each item, if... | null | 1 | null | null | null | 12.841069 | 12,841 | 2026-06-03T13:41:14.435720Z | {
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"category": "string_comparison",
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{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nThe function finds the maximum value by comparing strings lexicographically. Comparing '10', '9', '100' as strings: '9' > '10' because '9' > '1' at the first character. '9' is also greater than '100' because '9' > '1'. S... | null | 1 | null | null | null | 12.840832 | 12,841 | 2026-06-03T13:41:14.435720Z | {
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{
"role": "assistant",
"content": "\n<answer>9</answer>\n",
"reasoning_content": "\nI need to trace through this code. The function `max_value` takes a list and finds the maximum value. It starts with `max_val = lst[0]`, then iterates through each item, updating `max_val` if the current item is greater.... | null | 1 | null | null | null | 12.840625 | 12,841 | 2026-06-03T13:41:14.435720Z | {
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