input stringlengths 3 197 | original_steps listlengths 7 126 | original_answer stringclasses 147
values | mistake_index int64 3 36 ⌀ | full_prompt stringlengths 1.45k 66.5k | model_name_evaluated stringclasses 1
value | completion_1 stringlengths 1 66.5k | completion_2 stringlengths 1 138k | completion_3 stringlengths 1 68.5k | completion_4 stringlengths 1 67.6k | completion_5 stringlengths 1 84.9k | completion_6 stringlengths 1 67.3k | completion_7 stringlengths 1 67k | completion_8 stringlengths 1 38.8k |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
{ [ [ [ { [ ] } ] ] | [
"We should process each input one by one and keep track of the stack configuration.",
"stack: empty",
"{ ; stack: {",
"[ ; stack: { [",
"[ ; stack: { [ [",
"[ ; stack: { [ [ [",
"{ ; stack: { [ [ [ {",
"[ ; stack: { [ [ [ { [",
"] ; stack: { [ [ [ {",
"} ; stack: { [ [ [",
"] ; stack: { [ [",
... | } | 12 | <|im_start|>user
You are an expert in identifying mistakes in a given step-by-step reasoning task. You will be given a task description, a problem, and a sequence of steps taken to solve the problem. Your job is to identify the first mistake made, if any. You MUST output the NUMBER (!!!) of the step/thought that contai... | Qwen/Qwen3-30B-A3B-Instruct-2507 | Let's carefully analyze the sequence step by step, tracking the stack and the correctness of each operation.
We are given the input: `{ [ [ [ { [ ] } ] ]`
We are to complete the sequence so that all parentheses (brackets) are properly closed.
Let’s go step by step:
---
**Step 1**: "We should process each input one... | Let's carefully analyze the sequence step by step, tracking the stack and ensuring parentheses are properly matched and closed.
We are given the input: `{ [ [ [ { [ ] } ] ]`
We are to complete the sequence so that all parentheses are properly closed.
---
**Step 1**: "We should process each input one by one and keep... | Let's carefully analyze the sequence step by step, tracking the stack and the correctness of each operation.
We are given the input: `{ [ [ [ { [ ] } ] ]`
We need to process each character one by one, maintaining a stack, and ensure that parentheses (brackets) are properly closed. The goal is to determine what needs ... | Let's carefully analyze each step of the reasoning process to determine if there is a mistake.
We are given the input sequence:
`{ [ [ [ { [ ] } ] ]`
Our goal is to complete the sequence so that all parentheses (brackets) are properly closed, and we must track the stack correctly.
---
**Step 1**: "We should proce... | Let's carefully analyze each step in the reasoning process, tracking the stack as we go through the input sequence:
Input: `{ [ [ [ { [ ] } ] ]`
We process each character one by one.
---
**Step 1**: "We should process each input one by one and keep track of the stack configuration."
✅ This is a valid strategy. No... | Let's carefully analyze the sequence step by step, tracking the stack and the correctness of each operation.
We are given the input: `{ [ [ [ { [ ] } ] ]`
We are to complete the sequence so that all parentheses (brackets) are properly closed. The goal is to determine what must be added at the end to make the expressi... | Let's carefully analyze the sequence step by step, tracking the stack and ensuring proper matching of parentheses.
We are given the input: `{ [ [ [ { [ ] } ] ]`
We must process each character one by one and ensure that parentheses are closed properly. The goal is to determine what needs to be added at the end to clos... | Let's carefully analyze the sequence step by step, tracking the stack and ensuring proper matching of parentheses (brackets and braces).
We are given the input: `{ [ [ [ { [ ] } ] ]`
We need to process each character one by one, maintaining a stack. The goal is to ensure all brackets are properly closed, and at the e... |
< { < { [ < { ( [ ] ) } > { ( { } ) } ( ) ] } > } [ < < > > ] { } [ ] < { } | [
"We should process each input one by one and keep track of the stack configuration.",
"stack: empty",
"< ; stack: <",
"{ ; stack: < {",
"< ; stack: < { <",
"{ ; stack: < { < {",
"[ ; stack: < { < { [",
"< ; stack: < { < { [ <",
"{ ; stack: < { < { [ < {",
"( ; stack: < { < { [ < { (",
"[ ; stack... | > } | 15 | <|im_start|>user
You are an expert in identifying mistakes in a given step-by-step reasoning task. You will be given a task description, a problem, and a sequence of steps taken to solve the problem. Your job is to identify the first mistake made, if any. You MUST output the NUMBER (!!!) of the step/thought that contai... | Qwen/Qwen3-30B-A3B-Instruct-2507 | Let's carefully analyze each step of the reasoning process to determine if there is a mistake in the sequence.
We are given the input string:
`< { < { [ < { ( [ ] ) } > { ( { } ) } ( ) ] } > } [ < < > > ] { } [ ] < { }`
Our goal is to process the sequence character by character, maintaining a stack of opening bracke... | Let's carefully trace through the sequence step by step, keeping track of the stack and the expected closing brackets.
We are given the input:
`< { < { [ < { ( [ ] ) } > { ( { } ) } ( ) ] } > } [ < < > > ] { } [ ] < { }`
We process each character one by one, pushing opening brackets onto the stack and popping when ... | 14 | Let's carefully analyze the sequence step by step, tracking the stack and ensuring that parentheses (brackets) are properly matched and closed.
We are given the input string:
`< { < { [ < { ( [ ] ) } > { ( { } ) } ( ) ] } > } [ < < > > ] { } [ ] < { }`
We need to process each character one by one, maintaining a stac... | Let's carefully analyze the step-by-step reasoning provided, tracking the stack as we go through each character in the input sequence.
Input: `< { < { [ < { ( [ ] ) } > { ( { } ) } ( ) ] } > } [ < < > > ] { } [ ] < { }`
We process each character one by one, maintaining a stack of open brackets that are yet to be clos... | Let's carefully analyze the step-by-step reasoning provided, tracking the stack state as each character is processed, and verify whether the parentheses, brackets, and braces are properly matched and closed.
We are given the input sequence:
`< { < { [ < { ( [ ] ) } > { ( { } ) } ( ) ] } > } [ < < > > ] { } [ ] < { }`
... | Let's carefully analyze the step-by-step reasoning to detect the **first** mistake in the logic of processing the sequence of parentheses and brackets.
We are given the input:
```
< { < { [ < { ( [ ] ) } > { ( { } ) } ( ) ] } > } [ < < > > ] { } [ ] < { }
```
We are to process each character one by one, maintaining a... | Let's carefully analyze the sequence step by step, tracking the stack and ensuring that parentheses, brackets, and braces are properly matched and closed.
We are given the input string:
`< { < { [ < { ( [ ] ) } > { ( { } ) } ( ) ] } > } [ < < > > ] { } [ ] < { }`
We process each character one by one, maintaining a s... |
( < [ ( ) | ["We should process each input one by one and keep track of the stack configuration.","stack: empty"(...TRUNCATED) | ] > ) | null | "<|im_start|>user\nYou are an expert in identifying mistakes in a given step-by-step reasoning task.(...TRUNCATED) | Qwen/Qwen3-30B-A3B-Instruct-2507 | 10 | "Let's carefully analyze the sequence step by step.\n\nWe are given the input: `( < [ ( )`\n\nOur go(...TRUNCATED) | "Let's carefully analyze the sequence step by step, following the rules of matching parentheses and (...TRUNCATED) | "Let's analyze the sequence step by step, carefully tracking the stack and the logic of matching par(...TRUNCATED) | "Let's carefully analyze the sequence step by step.\n\nWe are given the input: `( < [ ( )`\n\nWe are(...TRUNCATED) | "Let's analyze the sequence step by step, carefully tracking the stack and the rules for matching pa(...TRUNCATED) | "Let's carefully analyze each step in the reasoning process to identify the first mistake.\n\n---\n\(...TRUNCATED) | "Let's carefully analyze each step of the reasoning process to determine if there is a mistake.\n\nW(...TRUNCATED) |
( ( ) ) < [ ( { ( ) } ) | ["We should process each input one by one and keep track of the stack configuration.","stack: empty"(...TRUNCATED) | ] > | null | "<|im_start|>user\nYou are an expert in identifying mistakes in a given step-by-step reasoning task.(...TRUNCATED) | Qwen/Qwen3-30B-A3B-Instruct-2507 | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring proper matching (...TRUNCATED) | 16 | 16 | "Let's carefully analyze each step of the reasoning process to determine if there is a mistake.\n\nW(...TRUNCATED) | "Let's carefully analyze the problem and each step of the reasoning.\n\nWe are given the input seque(...TRUNCATED) | 16 | 16 | 16 |
< < [ { } ] > | ["We should process each input one by one and keep track of the stack configuration.","stack: empty"(...TRUNCATED) | > | null | "<|im_start|>user\nYou are an expert in identifying mistakes in a given step-by-step reasoning task.(...TRUNCATED) | Qwen/Qwen3-30B-A3B-Instruct-2507 | "Let's analyze the sequence step by step, carefully tracking the stack and the rules for matching pa(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring proper matching (...TRUNCATED) | 11 | "Let's carefully analyze the sequence step by step, following the rules of matching parentheses (bra(...TRUNCATED) | 11 | "Let's carefully analyze the problem and each step in the reasoning.\n\nWe are given the input seque(...TRUNCATED) | "Let's carefully analyze the sequence step by step.\n\nWe are given the input: `< < [ { } ] >`\n\nOu(...TRUNCATED) | "Let's carefully analyze the sequence step by step, keeping in mind that we are dealing with nested (...TRUNCATED) |
< ( [ ] ) > ( ( < [ { { } } ] > ) | ["We should process each input one by one and keep track of the stack configuration.","stack: empty"(...TRUNCATED) | ) | null | "<|im_start|>user\nYou are an expert in identifying mistakes in a given step-by-step reasoning task.(...TRUNCATED) | Qwen/Qwen3-30B-A3B-Instruct-2507 | 21 | 21 | 19 | 19 | 19 | 19 | 19 | 19 |
< < > [ | ["We should process each input one by one and keep track of the stack configuration.","stack: empty"(...TRUNCATED) | ] > | null | "<|im_start|>user\nYou are an expert in identifying mistakes in a given step-by-step reasoning task.(...TRUNCATED) | Qwen/Qwen3-30B-A3B-Instruct-2507 | "Step 8 is the first mistake.\n\nLet’s analyze carefully:\n\nWe are given the input: `< < > [`\n\n(...TRUNCATED) | 10 | "Let's carefully analyze each step in the reasoning process to determine if there is a mistake.\n\nW(...TRUNCATED) | 10 | 10 | "Step 8 contains the first mistake.\n\nLet’s analyze carefully:\n\nWe are given the input sequence(...TRUNCATED) | "Let's carefully analyze the problem and the reasoning step by step.\n\nWe are given an input sequen(...TRUNCATED) | "Step 8 contains the first mistake.\n\nLet’s analyze carefully:\n\nWe are given the input sequence(...TRUNCATED) |
"{ { { ( { ( ) } ) } } [ ( [ { } { [ ] } < [ ] > ] ) ] } < ( ( ( { ( < ( [ [ ] ] ) > ) } ) ) ) > ( <(...TRUNCATED) | ["We should process each input one by one and keep track of the stack configuration.","stack: empty"(...TRUNCATED) | ] ) ) > | 9 | "<|im_start|>user\nYou are an expert in identifying mistakes in a given step-by-step reasoning task.(...TRUNCATED) | Qwen/Qwen3-30B-A3B-Instruct-2507 | 17 | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring that parentheses(...TRUNCATED) | 39 | 18 | "Let's carefully trace through the sequence step by step, keeping track of the stack and the expecte(...TRUNCATED) | "Let's carefully analyze the entire sequence step by step, tracking the stack and the parentheses/br(...TRUNCATED) | "Let's carefully go through the sequence step by step, tracking the stack and ensuring that parenthe(...TRUNCATED) | 13 |
[ [ [ [ < { ( ) } ( ) > { ( ) } ] { ( ) } | ["We should process each input one by one and keep track of the stack configuration.","stack: empty"(...TRUNCATED) | } ] ] ] ] > | 23 | "<|im_start|>user\nYou are an expert in identifying mistakes in a given step-by-step reasoning task.(...TRUNCATED) | Qwen/Qwen3-30B-A3B-Instruct-2507 | "Let's carefully analyze the problem and each step in the reasoning.\n\nWe are given a sequence of c(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring that parentheses(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring parentheses/brac(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and the parentheses/brackets/(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring that parentheses(...TRUNCATED) | "Let's carefully analyze each step of the reasoning process to determine if there is a mistake.\n\nW(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and the parentheses/brackets/(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring that parentheses(...TRUNCATED) |
"( { { { { { < < ( { ( { { < < [ < [ [ ] ] > ] [ ] > [ [ ] ] > ( < [ { < > < [ ] > } ] > ) } } ) } )(...TRUNCATED) | ["We should process each input one by one and keep track of the stack configuration.","stack: empty"(...TRUNCATED) | 7 | "<|im_start|>user\nYou are an expert in identifying mistakes in a given step-by-step reasoning task.(...TRUNCATED) | Qwen/Qwen3-30B-A3B-Instruct-2507 | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring that each symbol(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring that each symbol(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and ensuring that each charac(...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and the matching of parenthes(...TRUNCATED) | "Let's carefully trace through the sequence step by step, keeping track of the stack and ensuring th(...TRUNCATED) | "Let's carefully trace through the sequence step by step, tracking the stack and ensuring that each (...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack as we go, and verify whether (...TRUNCATED) | "Let's carefully analyze the sequence step by step, tracking the stack and the correctness of each o(...TRUNCATED) |
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