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Over 20,000 problems available: AMC 8/10/12 and AIME problems from 2010-2024; USAJMO/USAMO problems from 2002-2024; USACO problems from 2014 to 2024 (all divisions); all Codeforces, AtCoder and DMOJ problems. If you leave the search field blank, it returns all problems with the specified type.

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  • AMC 8: [year] AMC 8 Problem #, Ex: 2013 AMC 8 Problem 1
  • AMC 10: [year] AMC 10A Problem # OR [year] AMC 10B Problem #, Ex: 2015 AMC 10A Problem 16
  • AMC 12: [year] AMC 12A Problem # OR [year] AMC 12B Problem #, Ex: 2021 AMC 12B Problem 25
  • AIME: [year] AIME I Problem # OR [year] AIME II Problem #, Ex: 2013 AIME I Problem 8
  • USAJMO/USAMO: [year] USAJMO/USAMO Problem #, Ex: 2023 USAJMO Problem 1
  • Codeforces: Codeforces [contest id (e.g. 101)][problem id (e.g. A, B, C)]: [Codeforces problem name], Ex: Codeforces 1336F: Journey
  • AtCoder: AtCoder [contest id (e.g. ABC314, ARC164, ZONE2021)]: [problem id (A, B, C)]. [Problem name], Ex: AtCoder ZONE2021: E. Sneaking
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  • USACO: [year] [contest month (e.g. January, US Open)], [division (e.g. Gold)]: [Problem name], Ex: USACO 2023 US Open Contest, Bronze: Rotate and Shift

ID Problem Name (click to add insights/hints, view summary of insights/hints and similar problems)
24955 Codeforces 1934D1: XOR Break --- Solo Version
24954 Codeforces 1934C: Find a Mine
24953 Codeforces 1934B: Yet Another Coin Problem
24952 Codeforces 1934A: Too Min Too Max
24951 Codeforces 1933G: Turtle Magic: Royal Turtle Shell Pattern
24950 Codeforces 1933F: Turtle Mission: Robot and the Earthquake
24949 Codeforces 1933E: Turtle vs. Rabbit Race: Optimal Trainings
24948 Codeforces 1933D: Turtle Tenacity: Continual Mods
24947 Codeforces 1933C: Turtle Fingers: Count the Values of k
24946 Codeforces 1933B: Turtle Math: Fast Three Task
24945 Codeforces 1933A: Turtle Puzzle: Rearrange and Negate
24944 Codeforces 1932G: Moving Platforms
24943 Codeforces 1932F: Feed Cats
24942 Codeforces 1932E: Final Countdown
24941 Codeforces 1932D: Card Game
24940 Codeforces 1932C: LR-remainders
24939 Codeforces 1932B: Chaya Calendar
24938 Codeforces 1932A: Thorns and Coins
24937 Codeforces 1931G: One-Dimensional Puzzle
24936 Codeforces 1931F: Chat Screenshots
24935 Codeforces 1931E: Anna and the Valentine's Day Gift
24934 Codeforces 1931D: Divisible Pairs
24933 Codeforces 1931C: Make Equal Again
24932 Codeforces 1931B: Make Equal
24931 Codeforces 1931A: Recovering a Small String
24930 Codeforces 1930I: Counting Is Fun
24929 Codeforces 1930H: Interactive Mex Tree
24928 Codeforces 1930G: Prefix Max Set Counting
24927 Codeforces 1930F: Maximize the Difference
24926 Codeforces 1930E: 2..3...4.... Wonderful! Wonderful!
24925 Codeforces 1930D2: Sum over all Substrings (Hard Version)
24924 Codeforces 1930D1: Sum over all Substrings (Easy Version)
24923 Codeforces 1930C: Lexicographically Largest
24922 Codeforces 1930B: Permutation Printing
24921 Codeforces 1930A: Maximise The Score
24920 Codeforces 1929F: Sasha and the Wedding Binary Search Tree
24919 Codeforces 1929E: Sasha and the Happy Tree Cutting
24918 Codeforces 1929D: Sasha and a Walk in the City
24917 Codeforces 1929C: Sasha and the Casino
24916 Codeforces 1929B: Sasha and the Drawing
24915 Codeforces 1929A: Sasha and the Beautiful Array
24914 Codeforces 1928F: Digital Patterns
24913 Codeforces 1928E: Modular Sequence
24912 Codeforces 1928D: Lonely Mountain Dungeons
24911 Codeforces 1928C: Physical Education Lesson
24910 Codeforces 1928B: Equalize
24909 Codeforces 1928A: Rectangle Cutting
24908 Codeforces 1926G: Vlad and Trouble at MIT
24907 Codeforces 1926F: Vlad and Avoiding X
24906 Codeforces 1926E: Vlad and an Odd Ordering
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