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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
  • DMOJ: DMOJ [contest name (if applicable)] [problem number (e.g. P1)] - [Problem name], Ex: DMOJ Yet Another Contest 3 P1 - Shell Swap Scam
  • 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)
3300 Codeforces 774G: Perfectionist Arkadiy
3299 Codeforces 774F: Pens And Days Of Week
3298 Codeforces 774E: Big Number and Remainder
3297 Codeforces 774D: Lie or Truth
3296 Codeforces 774C: Maximum Number
3295 Codeforces 774B: Significant Cups
3294 Codeforces 774A: Amusement Park
3293 Codeforces 773F: Test Data Generation
3292 Codeforces 773E: Blog Post Rating
3291 Codeforces 773D: Perishable Roads
3290 Codeforces 773C: Prairie Partition
3289 Codeforces 773B: Dynamic Problem Scoring
3288 Codeforces 773A: Success Rate
3287 Codeforces 772E: Verifying Kingdom
3286 Codeforces 772D: Varying Kibibits
3285 Codeforces 772C: Vulnerable Kerbals
3284 Codeforces 772B: Volatile Kite
3283 Codeforces 772A: Voltage Keepsake
3282 Codeforces 771F: Bear and Isomorphic Points
3281 Codeforces 771E: Bear and Rectangle Strips
3280 Codeforces 771D: Bear and Company
3279 Codeforces 771C: Bear and Tree Jumps
3278 Codeforces 771B: Bear and Different Names
3277 Codeforces 771A: Bear and Friendship Condition
3276 Codeforces 770D: Draw Brackets!
3275 Codeforces 770C: Online Courses In BSU
3274 Codeforces 770B: Maximize Sum of Digits
3273 Codeforces 770A: New Password
3272 Codeforces 769D: k-Interesting Pairs Of Integers
3271 Codeforces 769C: Cycle In Maze
3270 Codeforces 769B: News About Credit
3269 Codeforces 769A: Year of University Entrance
3268 Codeforces 768G: The Winds of Winter
3267 Codeforces 768F: Barrels and boxes
3266 Codeforces 768E: Game of Stones
3265 Codeforces 768D: Jon and Orbs
3264 Codeforces 768C: Jon Snow and his Favourite Number
3263 Codeforces 768B: Code For 1
3262 Codeforces 768A: Oath of the Night's Watch
3261 Codeforces 767E: Change-free
3260 Codeforces 767D: Cartons of milk
3259 Codeforces 767C: Garland
3258 Codeforces 767B: The Queue
3257 Codeforces 767A: Snacktower
3256 Codeforces 766E: Mahmoud and a xor trip
3255 Codeforces 766D: Mahmoud and a Dictionary
3254 Codeforces 766C: Mahmoud and a Message
3253 Codeforces 766B: Mahmoud and a Triangle
3252 Codeforces 766A: Mahmoud and Longest Uncommon Subsequence
3251 Codeforces 765G: Math, math everywhere
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