{ "format_version": 1, "model": "llama-3.1-8b-instant", "timestamp": "2026-04-25T11:20:57.104704", "results": [ { "problem_id": "bug_001", "difficulty": "easy", "title": "Off-by-one in list index", "n_iterations": 1, "final_reward": 83.0, "best_reward": 83.0, "iter1_reward": 83.0, "best_iter": 1, "best_code": "def get_last(lst):\n \"\"\"\n Returns the last element of a list.\n\n Args:\n lst (list): The input list.\n\n Returns:\n The last element of the list.\n\n Raises:\n IndexError: If the list is empty.\n \"\"\"\n if len(lst) == 0:\n raise IndexError(\"List is empty\")\n return lst[-1]", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def get_last(lst):\n \"\"\"\n Returns the last element of a list.\n\n Args:\n lst (list): The input list.\n\n Returns:\n The last element of the list.\n\n Raises:\n IndexError: If the list is empty.\n \"\"\"\n if len(lst) == 0:\n raise IndexError(\"List is empty\")\n return lst[-1]", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 1.7127430438995361 }, "reward": { "total": 83.0, "test_score": 30.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_002", "difficulty": "easy", "title": "Wrong comparison operator (> instead of >=)", "n_iterations": 1, "final_reward": 58.0, "best_reward": 58.0, "iter1_reward": 58.0, "best_iter": 1, "best_code": "def is_passing(score):\n \"\"\"\n Checks if a student is passing based on their score.\n\n Args:\n score (int): The student's score.\n\n Returns:\n bool: True if the student is passing, False otherwise.\n \"\"\"\n if score >= 50:\n return True\n else:\n return False", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def is_passing(score):\n \"\"\"\n Checks if a student is passing based on their score.\n\n Args:\n score (int): The student's score.\n\n Returns:\n bool: True if the student is passing, False otherwise.\n \"\"\"\n if score >= 50:\n return True\n else:\n return False", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.6049189567565918 }, "reward": { "total": 58.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": -30.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": true } } ] }, { "problem_id": "bug_003", "difficulty": "easy", "title": "Missing return statement", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def square(n):\n \"\"\"\n Returns the square of a given number.\n\n Args:\n n (int or float): The number to be squared.\n\n Returns:\n int or float: The square of the given number.\n \"\"\"\n result = n * n\n return result", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def square(n):\n \"\"\"\n Returns the square of a given number.\n\n Args:\n n (int or float): The number to be squared.\n\n Returns:\n int or float: The square of the given number.\n \"\"\"\n result = n * n\n return result", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.45037269592285156 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_004", "difficulty": "easy", "title": "Wrong variable name used", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def celsius_to_fahrenheit(c):\n \"\"\"\n Converts temperature from Celsius to Fahrenheit.\n\n Args:\n c (float): Temperature in Celsius.\n\n Returns:\n float: Temperature in Fahrenheit.\n \"\"\"\n f = (c * 9 / 5) + 32\n return f", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def celsius_to_fahrenheit(c):\n \"\"\"\n Converts temperature from Celsius to Fahrenheit.\n\n Args:\n c (float): Temperature in Celsius.\n\n Returns:\n float: Temperature in Fahrenheit.\n \"\"\"\n f = (c * 9 / 5) + 32\n return f", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.7979958057403564 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_005", "difficulty": "easy", "title": "Wrong string method: split vs strip", "n_iterations": 3, "final_reward": 45.0, "best_reward": 45.0, "iter1_reward": 45.0, "best_iter": 1, "best_code": "def clean(s):\n return s.split() if s else []", "reward_gain": 0.0, "tests_passed_final": 0, "tests_total": 4, "solved": false, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def clean(s):\n return s.split() if s else []", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.5721383094787598 }, "reward": { "total": 45.0, "test_score": 0.0, "fix_quality": 20.0, "format_score": 12.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 2, "fix_result": { "fixed_code": "def clean(s):\n return s.split() if s else None", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.5621979236602783 }, "reward": { "total": 45.0, "test_score": 0.0, "fix_quality": 20.0, "format_score": 12.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 3, "fix_result": { "fixed_code": "def clean(s):\n return s.split() if s else []", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.6198172569274902 }, "reward": { "total": 45.0, "test_score": 0.0, "fix_quality": 20.0, "format_score": 12.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_006", "difficulty": "easy", "title": "Missing -1 in length calculation", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def second_to_last(lst):\n \"\"\"\n Returns the second to last element in a list.\n \n Args:\n lst (list): The input list.\n \n Returns:\n The second to last element in the list, or None if the list has less than two elements.\n \"\"\"\n if len(lst) < 2:\n return None\n return lst[-2]", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def second_to_last(lst):\n \"\"\"\n Returns the second to last element in a list.\n \n Args:\n lst (list): The input list.\n \n Returns:\n The second to last element in the list, or None if the list has less than two elements.\n \"\"\"\n if len(lst) < 2:\n return None\n return lst[-2]", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 1.2232606410980225 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_007", "difficulty": "easy", "title": "Wrong list method: append vs extend", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def combine(base, items):\n \"\"\"\n Combines the base list with the items list.\n \n Args:\n base (list): The base list to be combined.\n items (list): The list to be added to the base list.\n \n Returns:\n list: The combined list.\n \"\"\"\n base.extend(items) # Use extend() to add all items to the base list\n return base", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def combine(base, items):\n \"\"\"\n Combines the base list with the items list.\n \n Args:\n base (list): The base list to be combined.\n items (list): The list to be added to the base list.\n \n Returns:\n list: The combined list.\n \"\"\"\n base.extend(items) # Use extend() to add all items to the base list\n return base", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 1.6081223487854004 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_008", "difficulty": "easy", "title": "Comparing to None with == instead of is", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def is_empty(val):\n \"\"\"\n Checks if a value is None.\n \n Args:\n val (any): The value to check.\n \n Returns:\n bool: True if the value is None, False otherwise.\n \"\"\"\n return val is None", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def is_empty(val):\n \"\"\"\n Checks if a value is None.\n \n Args:\n val (any): The value to check.\n \n Returns:\n bool: True if the value is None, False otherwise.\n \"\"\"\n return val is None", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 1.6671397686004639 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_009", "difficulty": "easy", "title": "Integer division instead of float division", "n_iterations": 1, "final_reward": 83.0, "best_reward": 83.0, "iter1_reward": 83.0, "best_iter": 1, "best_code": "def average(nums):\n \"\"\"\n Calculate the average of a list of numbers.\n\n Args:\n nums (list): A list of numbers.\n\n Returns:\n float: The average of the numbers in the list.\n\n Raises:\n ZeroDivisionError: If the list is empty.\n \"\"\"\n if len(nums) == 0:\n raise ZeroDivisionError(\"Cannot calculate average of an empty list\")\n return sum(nums) / len(nums)", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def average(nums):\n \"\"\"\n Calculate the average of a list of numbers.\n\n Args:\n nums (list): A list of numbers.\n\n Returns:\n float: The average of the numbers in the list.\n\n Raises:\n ZeroDivisionError: If the list is empty.\n \"\"\"\n if len(nums) == 0:\n raise ZeroDivisionError(\"Cannot calculate average of an empty list\")\n return sum(nums) / len(nums)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.6487483978271484 }, "reward": { "total": 83.0, "test_score": 30.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_010", "difficulty": "easy", "title": "Wrong list index: -1 vs 0", "n_iterations": 1, "final_reward": 83.0, "best_reward": 83.0, "iter1_reward": 83.0, "best_iter": 1, "best_code": "def get_first(lst):\n \"\"\"\n Returns the first element of the list.\n\n Args:\n lst (list): The input list.\n\n Returns:\n The first element of the list.\n\n Raises:\n IndexError: If the list is empty.\n \"\"\"\n if not lst:\n raise IndexError(\"List is empty\")\n return lst[0]", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def get_first(lst):\n \"\"\"\n Returns the first element of the list.\n\n Args:\n lst (list): The input list.\n\n Returns:\n The first element of the list.\n\n Raises:\n IndexError: If the list is empty.\n \"\"\"\n if not lst:\n raise IndexError(\"List is empty\")\n return lst[0]", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.5843241214752197 }, "reward": { "total": 83.0, "test_score": 30.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_011", "difficulty": "medium", "title": "Wrong loop termination condition", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def countdown_sum(n):\n \"\"\"\n Calculate the sum of numbers from n down to 1.\n \n Args:\n n (int): The starting number for the countdown.\n \n Returns:\n int: The sum of numbers from n down to 1.\n \"\"\"\n if not isinstance(n, int) or n < 1:\n raise ValueError(\"Input must be a positive integer.\")\n total = 0\n while n > 0:\n total += n\n n -= 1\n return total", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def countdown_sum(n):\n \"\"\"\n Calculate the sum of numbers from n down to 1.\n \n Args:\n n (int): The starting number for the countdown.\n \n Returns:\n int: The sum of numbers from n down to 1.\n \"\"\"\n if not isinstance(n, int) or n < 1:\n raise ValueError(\"Input must be a positive integer.\")\n total = 0\n while n > 0:\n total += n\n n -= 1\n return total", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 1.5542845726013184 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_012", "difficulty": "medium", "title": "Wrong recursion base case value", "n_iterations": 1, "final_reward": 53.0, "best_reward": 53.0, "iter1_reward": 53.0, "best_iter": 1, "best_code": "def factorial(n):\n \"\"\"\n Calculate the factorial of a given number.\n \n Args:\n n (int): The number to calculate the factorial of.\n \n Returns:\n int: The factorial of n.\n \n Raises:\n ValueError: If n is a negative number.\n \"\"\"\n if n < 0:\n raise ValueError(\"Factorial is not defined for negative numbers\")\n elif n == 0:\n return 1\n else:\n return n * factorial(n - 1)", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def factorial(n):\n \"\"\"\n Calculate the factorial of a given number.\n \n Args:\n n (int): The number to calculate the factorial of.\n \n Returns:\n int: The factorial of n.\n \n Raises:\n ValueError: If n is a negative number.\n \"\"\"\n if n < 0:\n raise ValueError(\"Factorial is not defined for negative numbers\")\n elif n == 0:\n return 1\n else:\n return n * factorial(n - 1)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.726341962814331 }, "reward": { "total": 53.0, "test_score": 30.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": -30.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": true } } ] }, { "problem_id": "bug_013", "difficulty": "medium", "title": "Wrong sort order (missing reverse=True)", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def sort_desc(lst):\n \"\"\"\n Sorts a list in descending order.\n\n Args:\n lst (list): The list to be sorted.\n\n Returns:\n list: The sorted list in descending order.\n \"\"\"\n return sorted(lst, reverse=True)", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def sort_desc(lst):\n \"\"\"\n Sorts a list in descending order.\n\n Args:\n lst (list): The list to be sorted.\n\n Returns:\n list: The sorted list in descending order.\n \"\"\"\n return sorted(lst, reverse=True)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 0.5794713497161865 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_014", "difficulty": "medium", "title": "Missing edge case for empty list", "n_iterations": 1, "final_reward": 58.0, "best_reward": 58.0, "iter1_reward": 58.0, "best_iter": 1, "best_code": "def safe_max(lst):\n \"\"\"\n Returns the maximum value in a list, or None if the list is empty.\n \n Args:\n lst (list): The list to find the maximum value in.\n \n Returns:\n The maximum value in the list, or None if the list is empty.\n \"\"\"\n if not lst:\n return None\n return max(lst)", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def safe_max(lst):\n \"\"\"\n Returns the maximum value in a list, or None if the list is empty.\n \n Args:\n lst (list): The list to find the maximum value in.\n \n Returns:\n The maximum value in the list, or None if the list is empty.\n \"\"\"\n if not lst:\n return None\n return max(lst)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 4.735860109329224 }, "reward": { "total": 58.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": -30.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": true } } ] }, { "problem_id": "bug_015", "difficulty": "medium", "title": "Wrong string format (% vs .format)", "n_iterations": 1, "final_reward": 97.0, "best_reward": 97.0, "iter1_reward": 97.0, "best_iter": 1, "best_code": "def greet(name, age):\n return 'Hello %s, you are %d years old' % (name, age)", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def greet(name, age):\n return 'Hello %s, you are %d years old' % (name, age)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 4.904545307159424 }, "reward": { "total": 97.0, "test_score": 30.0, "fix_quality": 20.0, "format_score": 12.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 0.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_016", "difficulty": "medium", "title": "Wrong dictionary key access", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def get_value(d, key):\n \"\"\"\n Returns the value associated with the given key in the dictionary.\n \n Args:\n d (dict): The dictionary to search in.\n key (any): The key to search for.\n \n Returns:\n any: The value associated with the key, or None if the key is not found.\n \"\"\"\n return d.get(key)", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def get_value(d, key):\n \"\"\"\n Returns the value associated with the given key in the dictionary.\n \n Args:\n d (dict): The dictionary to search in.\n key (any): The key to search for.\n \n Returns:\n any: The value associated with the key, or None if the key is not found.\n \"\"\"\n return d.get(key)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 5.201507568359375 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_017", "difficulty": "medium", "title": "Wrong boolean logic (and vs or)", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def both_true(a, b):\n \"\"\"\n Returns True if both a and b are True, False otherwise.\n \n Args:\n a (bool): The first boolean value.\n b (bool): The second boolean value.\n \n Returns:\n bool: True if both a and b are True, False otherwise.\n \"\"\"\n return a and b", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def both_true(a, b):\n \"\"\"\n Returns True if both a and b are True, False otherwise.\n \n Args:\n a (bool): The first boolean value.\n b (bool): The second boolean value.\n \n Returns:\n bool: True if both a and b are True, False otherwise.\n \"\"\"\n return a and b", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 4.805779933929443 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_018", "difficulty": "medium", "title": "Wrong range bounds (range(n) vs range(n+1))", "n_iterations": 1, "final_reward": 58.0, "best_reward": 58.0, "iter1_reward": 58.0, "best_iter": 1, "best_code": "def sum_to_n(n):\n \"\"\"\n Returns the sum of all numbers from 1 to n (inclusive).\n \n Args:\n n (int): The upper limit of the sum.\n \n Returns:\n int: The sum of all numbers from 1 to n.\n \"\"\"\n if n < 1:\n return 0\n return sum(range(1, n + 1))", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def sum_to_n(n):\n \"\"\"\n Returns the sum of all numbers from 1 to n (inclusive).\n \n Args:\n n (int): The upper limit of the sum.\n \n Returns:\n int: The sum of all numbers from 1 to n.\n \"\"\"\n if n < 1:\n return 0\n return sum(range(1, n + 1))", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 4.644525051116943 }, "reward": { "total": 58.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": -30.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": true } } ] }, { "problem_id": "bug_019", "difficulty": "medium", "title": "Missing int() type conversion", "n_iterations": 3, "final_reward": 33.0, "best_reward": 33.0, "iter1_reward": 33.0, "best_iter": 1, "best_code": "def double_str(s):\n \"\"\"\n Returns a string that is the input string repeated twice.\n \n Args:\n s (str): The input string.\n \n Returns:\n str: The input string repeated twice.\n \"\"\"\n if not isinstance(s, str):\n raise TypeError(\"Input must be a string\")\n return s * 2", "reward_gain": 0.0, "tests_passed_final": 0, "tests_total": 4, "solved": false, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def double_str(s):\n \"\"\"\n Returns a string that is the input string repeated twice.\n \n Args:\n s (str): The input string.\n \n Returns:\n str: The input string repeated twice.\n \"\"\"\n if not isinstance(s, str):\n raise TypeError(\"Input must be a string\")\n return s * 2", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 5.381901025772095 }, "reward": { "total": 33.0, "test_score": 0.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 2, "fix_result": { "fixed_code": "def double_str(s):\n \"\"\"\n Returns a string that is the input string repeated twice.\n \n Args:\n s (str): The input string.\n \n Returns:\n str: The input string repeated twice.\n \"\"\"\n if not isinstance(s, str):\n raise TypeError(\"Input must be a string\")\n return str(s) * 2", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 4.978577136993408 }, "reward": { "total": 33.0, "test_score": 0.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 3, "fix_result": { "fixed_code": "def double_str(s):\n \"\"\"\n Returns a string that is the input string repeated twice.\n \n Args:\n s (str): The input string.\n \n Returns:\n str: The input string repeated twice.\n \"\"\"\n if not isinstance(s, str):\n raise TypeError(\"Input must be a string\")\n return s * 2", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 5.045402526855469 }, "reward": { "total": 33.0, "test_score": 0.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_020", "difficulty": "medium", "title": "Wrong list slicing ([1:] vs [:1])", "n_iterations": 3, "final_reward": 28.0, "best_reward": 28.0, "iter1_reward": 28.0, "best_iter": 1, "best_code": "def tail(lst):\n \"\"\"\n Returns the last element of a list.\n\n Args:\n lst (list): The input list.\n\n Returns:\n The last element of the list, or None if the list is empty.\n\n Raises:\n TypeError: If the input is not a list.\n \"\"\"\n if not isinstance(lst, list):\n raise TypeError(\"Input must be a list\")\n return lst[-1] if lst else None", "reward_gain": 0.0, "tests_passed_final": 0, "tests_total": 4, "solved": false, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def tail(lst):\n \"\"\"\n Returns the last element of a list.\n\n Args:\n lst (list): The input list.\n\n Returns:\n The last element of the list, or None if the list is empty.\n\n Raises:\n TypeError: If the input is not a list.\n \"\"\"\n if not isinstance(lst, list):\n raise TypeError(\"Input must be a list\")\n return lst[-1] if lst else None", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 5.3712804317474365 }, "reward": { "total": 28.0, "test_score": 0.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 2, "fix_result": { "fixed_code": "def tail(lst):\n \"\"\"\n Returns the last element of a list.\n\n Args:\n lst (list): The input list.\n\n Returns:\n The last element of the list, or None if the list is empty.\n\n Raises:\n TypeError: If the input is not a list.\n \"\"\"\n if not isinstance(lst, list):\n raise TypeError(\"Input must be a list\")\n return lst[-1] if lst else None", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 5.4388587474823 }, "reward": { "total": 28.0, "test_score": 0.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 3, "fix_result": { "fixed_code": "def tail(lst):\n \"\"\"\n Returns the last element of a list.\n\n Args:\n lst (list): The input list.\n\n Returns:\n The last element of the list, or None if the list is empty.\n\n Raises:\n TypeError: If the input is not a list.\n \"\"\"\n if not isinstance(lst, list):\n raise TypeError(\"Input must be a list\")\n return lst[-1] if lst else None", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 4.869316339492798 }, "reward": { "total": 28.0, "test_score": 0.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_021", "difficulty": "hard", "title": "Binary search off-by-one in mid update", "n_iterations": 1, "final_reward": 63.0, "best_reward": 63.0, "iter1_reward": 63.0, "best_iter": 1, "best_code": "def binary_search(arr, target):\n lo, hi = 0, len(arr) - 1\n while lo <= hi:\n mid = (lo + hi) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n lo = mid + 1 # increment lo to search in the right half\n else:\n hi = mid - 1 # decrement hi to search in the left half\n return -1", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def binary_search(arr, target):\n lo, hi = 0, len(arr) - 1\n while lo <= hi:\n mid = (lo + hi) // 2\n if arr[mid] == target:\n return mid\n elif arr[mid] < target:\n lo = mid + 1 # increment lo to search in the right half\n else:\n hi = mid - 1 # decrement hi to search in the left half\n return -1", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 4.765933036804199 }, "reward": { "total": 63.0, "test_score": 30.0, "fix_quality": 10.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": -30.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": true } } ] }, { "problem_id": "bug_022", "difficulty": "hard", "title": "Wrong DP state transition (Fibonacci)", "n_iterations": 1, "final_reward": 103.0, "best_reward": 103.0, "iter1_reward": 103.0, "best_iter": 1, "best_code": "def fib_dp(n):\n if n <= 1:\n return n\n dp = [0] * (n + 1)\n dp[1] = 1\n for i in range(2, n + 1):\n dp[i] = dp[i - 1] + dp[i - 2] # Fix: Use dp[i - 2] instead of dp[i - 1]\n return dp[n]", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def fib_dp(n):\n if n <= 1:\n return n\n dp = [0] * (n + 1)\n dp[1] = 1\n for i in range(2, n + 1):\n dp[i] = dp[i - 1] + dp[i - 2] # Fix: Use dp[i - 2] instead of dp[i - 1]\n return dp[n]", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 4.969466209411621 }, "reward": { "total": 103.0, "test_score": 30.0, "fix_quality": 20.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_023", "difficulty": "hard", "title": "Wrong graph traversal: visited check in wrong place", "n_iterations": 1, "final_reward": 85.0, "best_reward": 85.0, "iter1_reward": 85.0, "best_iter": 1, "best_code": "from collections import deque\ndef bfs_count(graph, start):\n visited = set()\n queue = deque([start])\n count = 0\n while queue:\n node = queue.popleft()\n if node not in visited:\n visited.add(node)\n count += 1\n for nb in graph.get(node, []):\n queue.append(nb)\n return count", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "from collections import deque\ndef bfs_count(graph, start):\n visited = set()\n queue = deque([start])\n count = 0\n while queue:\n node = queue.popleft()\n if node not in visited:\n visited.add(node)\n count += 1\n for nb in graph.get(node, []):\n queue.append(nb)\n return count", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 3.6319739818573 }, "reward": { "total": 85.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 12.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_024", "difficulty": "hard", "title": "Missing memoization causing exponential recursion", "n_iterations": 1, "final_reward": 88.0, "best_reward": 88.0, "iter1_reward": 88.0, "best_iter": 1, "best_code": "def fib_memo(n, memo={}):\n \"\"\"\n Calculate the nth Fibonacci number using memoization.\n \n Args:\n n (int): The position of the Fibonacci number to calculate.\n memo (dict): A dictionary to store previously calculated Fibonacci numbers.\n \n Returns:\n int: The nth Fibonacci number.\n \"\"\"\n if n <= 1:\n return n\n elif n not in memo:\n memo[n] = fib_memo(n - 1, memo) + fib_memo(n - 2, memo)\n return memo[n]", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def fib_memo(n, memo={}):\n \"\"\"\n Calculate the nth Fibonacci number using memoization.\n \n Args:\n n (int): The position of the Fibonacci number to calculate.\n memo (dict): A dictionary to store previously calculated Fibonacci numbers.\n \n Returns:\n int: The nth Fibonacci number.\n \"\"\"\n if n <= 1:\n return n\n elif n not in memo:\n memo[n] = fib_memo(n - 1, memo) + fib_memo(n - 2, memo)\n return memo[n]", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 5.019173622131348 }, "reward": { "total": 88.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_025", "difficulty": "hard", "title": "Wrong two-pointer movement direction", "n_iterations": 3, "final_reward": 8.0, "best_reward": 33.0, "iter1_reward": 18.0, "best_iter": 2, "best_code": "def two_sum_sorted(arr, target):\n lo, hi = 0, len(arr) - 1\n while lo < hi:\n s = arr[lo] + arr[hi]\n if s == target:\n return [arr[lo], arr[hi]]\n elif s < target:\n lo += 1 # Move the low pointer to increase the sum\n else:\n hi -= 1 # Move the high pointer to decrease the sum\n return None # Return None instead of an empty list", "reward_gain": 15.0, "tests_passed_final": 1, "tests_total": 4, "solved": false, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def two_sum_sorted(arr, target):\n lo, hi = 0, len(arr) - 1\n while lo < hi:\n s = arr[lo] + arr[hi]\n if s == target:\n return [arr[lo], arr[hi]]\n elif s < target:\n lo += 1 # Move the low pointer to increase the sum\n else:\n hi -= 1 # Move the high pointer to decrease the sum\n return []", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 6.810592889785767 }, "reward": { "total": 18.0, "test_score": 5.0, "fix_quality": 10.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 5.0, "anti_hack_penalty": -30.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": true } }, { "iteration": 2, "fix_result": { "fixed_code": "def two_sum_sorted(arr, target):\n lo, hi = 0, len(arr) - 1\n while lo < hi:\n s = arr[lo] + arr[hi]\n if s == target:\n return [arr[lo], arr[hi]]\n elif s < target:\n lo += 1 # Move the low pointer to increase the sum\n else:\n hi -= 1 # Move the high pointer to decrease the sum\n return None # Return None instead of an empty list", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 8.267582178115845 }, "reward": { "total": 33.0, "test_score": 0.0, "fix_quality": 10.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": -5.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 3, "fix_result": { "fixed_code": "def two_sum_sorted(arr, target):\n \"\"\"\n Returns two elements in the sorted array that add up to the target value.\n \n Args:\n arr (list): A sorted list of integers.\n target (int): The target sum.\n \n Returns:\n list: A list containing two elements that add up to the target value, or an empty list if no such pair exists.\n \"\"\"\n lo, hi = 0, len(arr) - 1\n while lo < hi:\n s = arr[lo] + arr[hi]\n if s == target:\n return [arr[lo], arr[hi]]\n elif s < target:\n lo += 1 # Move the low pointer to increase the sum\n else:\n hi -= 1 # Move the high pointer to decrease the sum\n return [] # Return an empty list instead of None", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 10.332554578781128 }, "reward": { "total": 8.0, "test_score": 5.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 5.0, "anti_hack_penalty": -30.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": true } } ] }, { "problem_id": "bug_026", "difficulty": "hard", "title": "Wrong greedy choice (min vs max)", "n_iterations": 2, "final_reward": 80.0, "best_reward": 80.0, "iter1_reward": 53.0, "best_iter": 2, "best_code": "def greedy_knapsack(weights, capacity):\n \"\"\"\n This function implements the greedy algorithm for the 0/1 knapsack problem.\n \n Parameters:\n weights (list): A list of weights of items.\n capacity (int): The maximum capacity of the knapsack.\n \n Returns:\n int: The maximum total weight that can be put in the knapsack.\n \"\"\"\n weights = sorted(weights, reverse=True) # Sort weights in descending order\n total = 0\n for w in weights:\n if total + w <= capacity:\n total += w\n else:\n # If adding the current item exceeds capacity, move to the next item\n continue\n return total", "reward_gain": 27.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def greedy_knapsack(weights, capacity):\n \"\"\"\n This function implements the greedy algorithm for the 0/1 knapsack problem.\n \n Parameters:\n weights (list): A list of weights of items.\n capacity (int): The maximum capacity of the knapsack.\n \n Returns:\n int: The maximum total weight that can be put in the knapsack.\n \"\"\"\n weights = sorted(weights, reverse=True) # Sort weights in descending order\n total = 0\n for w in weights:\n if total + w <= capacity:\n total += w\n else:\n # If adding the current item exceeds capacity, break the loop\n break\n return total", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 6.023886442184448 }, "reward": { "total": 53.0, "test_score": 10.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 10.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 2, "fix_result": { "fixed_code": "def greedy_knapsack(weights, capacity):\n \"\"\"\n This function implements the greedy algorithm for the 0/1 knapsack problem.\n \n Parameters:\n weights (list): A list of weights of items.\n capacity (int): The maximum capacity of the knapsack.\n \n Returns:\n int: The maximum total weight that can be put in the knapsack.\n \"\"\"\n weights = sorted(weights, reverse=True) # Sort weights in descending order\n total = 0\n for w in weights:\n if total + w <= capacity:\n total += w\n else:\n # If adding the current item exceeds capacity, move to the next item\n continue\n return total", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 10.278629064559937 }, "reward": { "total": 80.0, "test_score": 30.0, "fix_quality": 5.0, "format_score": 15.0, "speed_score": 7.0, "safety_score": 10.0, "improvement_score": 10.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_027", "difficulty": "hard", "title": "Off-by-one in sliding window boundary", "n_iterations": 1, "final_reward": 83.0, "best_reward": 83.0, "iter1_reward": 83.0, "best_iter": 1, "best_code": "def max_window_sum(arr, k):\n \"\"\"\n Returns the maximum sum of a window of size k in the given array.\n \n Parameters:\n arr (list): The input array.\n k (int): The size of the window.\n \n Returns:\n int: The maximum sum of a window of size k.\n \"\"\"\n if k > len(arr):\n raise ValueError(\"k cannot be greater than the length of the array\")\n \n window = sum(arr[:k])\n best = window\n for i in range(k, len(arr)):\n # Remove the first element of the previous window and add the next element\n window = window - arr[i - k] + arr[i]\n best = max(best, window)\n return best", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def max_window_sum(arr, k):\n \"\"\"\n Returns the maximum sum of a window of size k in the given array.\n \n Parameters:\n arr (list): The input array.\n k (int): The size of the window.\n \n Returns:\n int: The maximum sum of a window of size k.\n \"\"\"\n if k > len(arr):\n raise ValueError(\"k cannot be greater than the length of the array\")\n \n window = sum(arr[:k])\n best = window\n for i in range(k, len(arr)):\n # Remove the first element of the previous window and add the next element\n window = window - arr[i - k] + arr[i]\n best = max(best, window)\n return best", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 6.842673063278198 }, "reward": { "total": 83.0, "test_score": 30.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_028", "difficulty": "hard", "title": "Wrong merge logic in merge sort", "n_iterations": 1, "final_reward": 103.0, "best_reward": 103.0, "iter1_reward": 103.0, "best_iter": 1, "best_code": "def merge(left, right):\n result = []\n i = j = 0\n while i < len(left) and j < len(right):\n if left[i] <= right[j]: # Changed from '>' to '<='\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n result.extend(left[i:])\n result.extend(right[j:])\n return result", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def merge(left, right):\n result = []\n i = j = 0\n while i < len(left) and j < len(right):\n if left[i] <= right[j]: # Changed from '>' to '<='\n result.append(left[i])\n i += 1\n else:\n result.append(right[j])\n j += 1\n result.extend(left[i:])\n result.extend(right[j:])\n return result", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 6.83858323097229 }, "reward": { "total": 103.0, "test_score": 30.0, "fix_quality": 20.0, "format_score": 15.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_029", "difficulty": "hard", "title": "Wrong heap operation (push vs pop)", "n_iterations": 3, "final_reward": 38.0, "best_reward": 48.0, "iter1_reward": 48.0, "best_iter": 1, "best_code": "import heapq\ndef kth_largest(nums, k):\n \"\"\"\n Returns the kth largest element in the given list of numbers.\n \n Args:\n nums (list): A list of numbers.\n k (int): The position of the number to return (1-indexed).\n \n Returns:\n int: The kth largest number in the list.\n \"\"\"\n heap = []\n for n in nums:\n heapq.heappush(heap, -n) # Push negative numbers to simulate max heap\n if len(heap) > k:\n heapq.heappop(heap) # Remove the smallest element (now the largest in the heap)\n return -heap[0] # Return the largest element (now the smallest in the heap)", "reward_gain": 0.0, "tests_passed_final": 2, "tests_total": 4, "solved": false, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "import heapq\ndef kth_largest(nums, k):\n \"\"\"\n Returns the kth largest element in the given list of numbers.\n \n Args:\n nums (list): A list of numbers.\n k (int): The position of the number to return (1-indexed).\n \n Returns:\n int: The kth largest number in the list.\n \"\"\"\n heap = []\n for n in nums:\n heapq.heappush(heap, -n) # Push negative numbers to simulate max heap\n if len(heap) > k:\n heapq.heappop(heap) # Remove the smallest element (now the largest in the heap)\n return -heap[0] # Return the largest element (now the smallest in the heap)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 6.092443466186523 }, "reward": { "total": 48.0, "test_score": 10.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 10.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 2, "fix_result": { "fixed_code": "import heapq\ndef kth_largest(nums, k):\n \"\"\"\n Returns the kth largest element in the given list of numbers.\n \n Args:\n nums (list): A list of numbers.\n k (int): The position of the number to return (1-indexed).\n \n Returns:\n int: The kth largest number in the list.\n \"\"\"\n heap = []\n for n in nums:\n heapq.heappush(heap, -n) # Push negative numbers to simulate max heap\n if len(heap) > k:\n heapq.heappop(heap) # Remove the smallest element (now the largest in the heap)\n return -heap[0] # Return the kth largest element (not the smallest in the heap)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 12.468495845794678 }, "reward": { "total": 38.0, "test_score": 10.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": false, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } }, { "iteration": 3, "fix_result": { "fixed_code": "import heapq\ndef kth_largest(nums, k):\n \"\"\"\n Returns the kth largest element in the given list of numbers.\n \n Args:\n nums (list): A list of numbers.\n k (int): The position of the number to return (1-indexed).\n \n Returns:\n int: The kth largest number in the list.\n \"\"\"\n heap = []\n for n in nums:\n heapq.heappush(heap, -n) # Push negative numbers to simulate max heap\n if len(heap) > k:\n heapq.heappop(heap) # Remove the smallest element (now the largest in the heap)\n return -heap[0] # Return the kth largest element (not the smallest in the heap)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 10.907439231872559 }, "reward": { "total": 38.0, "test_score": 10.0, "fix_quality": 0.0, "format_score": 15.0, "speed_score": 0.0, "safety_score": 10.0, "improvement_score": 0.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": false, "safety_violations": [], "anti_hack_failed": false } } ] }, { "problem_id": "bug_030", "difficulty": "hard", "title": "Wrong backtracking: missing undo step", "n_iterations": 1, "final_reward": 100.0, "best_reward": 100.0, "iter1_reward": 100.0, "best_iter": 1, "best_code": "def permutations(nums):\n result = []\n def backtrack(path, remaining):\n if not remaining:\n result.append(path[:])\n return\n for i in range(len(remaining)):\n backtrack(path + [remaining[i]], remaining[:i] + remaining[i+1:])\n backtrack([], nums)\n return sorted(result)", "reward_gain": 0.0, "tests_passed_final": 4, "tests_total": 4, "solved": true, "iterations": [ { "iteration": 1, "fix_result": { "fixed_code": "def permutations(nums):\n result = []\n def backtrack(path, remaining):\n if not remaining:\n result.append(path[:])\n return\n for i in range(len(remaining)):\n backtrack(path + [remaining[i]], remaining[:i] + remaining[i+1:])\n backtrack([], nums)\n return sorted(result)", "explanation": "Simplified prompt fallback", "confidence": 0.6, "method": "simplified", "elapsed_seconds": 6.7610321044921875 }, "reward": { "total": 100.0, "test_score": 30.0, "fix_quality": 20.0, "format_score": 12.0, "speed_score": 10.0, "safety_score": 10.0, "improvement_score": 15.0, "anti_hack_penalty": 0.0, "process_bonus": 3.0 }, "done": true, "info": { "solved": true, "safety_violations": [], "anti_hack_failed": false } } ] } ], "summary": { "total_problems": 30, "solved": 25, "avg_best_reward": 75.23333333333333, "by_difficulty": { "easy": { "solved": 9, "total": 10, "avg_reward": 79.2 }, "medium": { "solved": 8, "total": 10, "avg_reward": 67.9 }, "hard": { "solved": 8, "total": 10, "avg_reward": 78.6 } } } }