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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)
19155 DMOJ Economy
19154 DMOJ Ternary Search Tree
19153 DMOJ Teleportation Tangle
19152 DMOJ Triway Cup '19 Summer Junior P3 - Thor Goes for the Papaya
19151 DMOJ Triway Cup '19 Summer Junior P2 - Thanos Knows the Most
19150 DMOJ Triway Cup '19 Summer Junior P1 - Getting Snappy
19149 DMOJ Triway Cup '19 Summer I - An Easy Problem
19148 DMOJ Triway Cup '19 Summer H - Time Traveller Imaxblue
19147 DMOJ Triway Cup '19 Summer F - Race
19146 DMOJ Triway Cup '19 Summer E - Solar Power
19145 DMOJ Triway Cup '19 Summer D - Napping
19144 DMOJ Triway Cup '19 Summer C - String
19143 DMOJ Triway Cup '19 Summer B - Cameras
19142 DMOJ Triway Cup '19 Summer A - Cave Escape
19141 DMOJ Triway Cup '18 Summer H - Heavy Souls
19140 DMOJ Triway Cup '18 Summer G - Gu of Love
19139 DMOJ Triway Cup '18 Summer F - Forget Me Not
19138 DMOJ Triway Cup '18 Summer E - Eyes of Void
19137 DMOJ Triway Cup '18 Summer D - Demon Slayer
19136 DMOJ Triway Cup '18 Summer B - Beautiful Water Pearl
19135 DMOJ Triway Cup '18 Summer A - Arranged Marriage
19134 DMOJ TC
19133 DMOJ Tall
19132 DMOJ T-800's Escape
19131 DMOJ System Solver
19130 DMOJ ICPC SWERC 2017 K - Blowing Candles
19129 DMOJ ICPC SWERC 2017 J - Frosting on the Cake
19128 DMOJ ICPC SWERC 2017 I - Burglary
19127 DMOJ ICPC SWERC 2017 H - Kabobs
19126 DMOJ ICPC SWERC 2017 G - Cordon Bleu
19125 DMOJ ICPC SWERC 2017 F - Shattered Cake
19124 DMOJ ICPC SWERC 2017 E - Ingredients
19123 DMOJ ICPC SWERC 2017 D - Candy Chain
19122 DMOJ ICPC SWERC 2017 C - Macarons
19121 DMOJ ICPC SWERC 2017 B - Table
19120 DMOJ ICPC SWERC 2017 A - Cakey McCakeFace
19119 DMOJ Line Sweep
19118 DMOJ Homie from Suomi
19117 DMOJ Sum Maximization
19116 DMOJ Sudoku Challenge
19115 DMOJ Subway Routes
19114 DMOJ Subarray Search
19113 DMOJ Substring Scoring
19112 DMOJ A Subarray Problem
19111 DMOJ Cute String Merging
19110 DMOJ Spy Tree
19109 DMOJ Strategic Arrays
19108 DMOJ STNBD P6 - Terminus Est
19107 DMOJ STNBD P5 - Fianna Ray Ordesia
19106 DMOJ STNBD P4 - Ellis Fahrengart
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