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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)
19305 DMOJ TSOC '16 Contest 1 #2 - Johnny and Garden
19304 DMOJ TSOC '16 Contest 1 #1 - Vasile and Haircuts
19303 DMOJ TSOC '15 Contest 2 #6 - All-Out War!
19302 DMOJ TSOC '15 Contest 2 #5 - Bebiliths
19301 DMOJ TSOC '15 Contest 2 #4 - Dungeon Crawling
19300 DMOJ TSOC '15 Contest 2 #3 - Funny Anagrams
19299 DMOJ TSOC '15 Contest 2 #2 - Diamonds
19298 DMOJ TSOC '15 Contest 2 #1 - The Code
19297 DMOJ TSOC '15 Contest 1 #5 - Giant Ants
19296 DMOJ TSOC '15 Contest 1 #4 - Restaurant Of Secrets
19295 DMOJ TSOC '15 Contest 1 #3 - Elevators
19294 DMOJ TSOC '15 Contest 1 #2 - Special Store
19293 DMOJ TSOC '15 Contest 1 #1 - Molecular or Non-Molecular?
19292 DMOJ Tropical Bananas
19291 DMOJ Trick-or-Treat
19290 DMOJ Tree Tasks
19289 DMOJ Tree Paths
19288 DMOJ Mine and Tree
19287 DMOJ Tree Cutting
19286 DMOJ Is it a Tree?
19285 DMOJ Traffic Lights
19284 DMOJ Towers
19283 DMOJ Total Destruction
19282 DMOJ Topium
19281 DMOJ Tootsie Rolls
19280 DMOJ Still Too Simple
19279 DMOJ Too Simple
19278 DMOJ Temple Construction
19277 DMOJ An Extraordinarily Coordinated Christmas
19276 DMOJ TLE 2018-19 P6 - The Final Test
19275 DMOJ TLE 2018-19 P5 - Pure Functional Programming
19274 DMOJ TLE 2018-19 P4 - Fax McClad and the Melee
19273 DMOJ TLE 2018-19 P3 - Feedback Survey
19272 DMOJ TLE 2018-19 P2 - Willson and Trivial Problem
19271 DMOJ TLE 2018-19 P1 - Hello, World!
19270 DMOJ TLE '17 Contest 8 P6 - Willson and Nesting Season
19269 DMOJ TLE '17 Contest 8 P5 - Battle Plan 2
19268 DMOJ TLE '17 Contest 8 P4 - Gamma Waves
19267 DMOJ TLE '17 Contest 8 P3 - Curious Numbers
19266 DMOJ TLE '17 Contest 8 P2 - Ship Defense
19265 DMOJ TLE '17 Contest 8 P1 - Artificial Intelligence
19264 DMOJ TLE '17 Contest 7 P6 - Base Bombing
19263 DMOJ TLE '17 Contest 7 P5 - Willson and Mating
19262 DMOJ TLE '17 Contest 7 P4 - Database
19261 DMOJ TLE '17 Contest 7 P3 - Countless Calculator Computations
19260 DMOJ TLE '17 Contest 7 P2 - Airport Hopping
19259 DMOJ TLE '17 Contest 7 P1 - Stargazing
19258 DMOJ TLE '17 Contest 6 P6 - 6 Friends
19257 DMOJ TLE '17 Contest 6 P5 - Speedrunning
19256 DMOJ TLE '17 Contest 6 P4 - Willson and Travelling
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