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)
22742 2011 AIME II Problem 5
22741 2011 AIME II Problem 4
22740 2011 AIME II Problem 3
22739 2011 AIME II Problem 2
22738 2011 AIME II Problem 1
22737 2011 AIME I Problem 15
22736 2011 AIME I Problem 14
22735 2011 AIME I Problem 13
22734 2011 AIME I Problem 12
22733 2011 AIME I Problem 11
22732 2011 AIME I Problem 10
22731 2011 AIME I Problem 9
22730 2011 AIME I Problem 8
22729 2011 AIME I Problem 7
22728 2011 AIME I Problem 6
22727 2011 AIME I Problem 5
22726 2011 AIME I Problem 4
22725 2011 AIME I Problem 3
22724 2011 AIME I Problem 2
22723 2011 AIME I Problem 1
22722 2010 AIME II Problem 15
22721 2010 AIME II Problem 14
22720 2010 AIME II Problem 13
22719 2010 AIME II Problem 12
22718 2010 AIME II Problem 11
22717 2010 AIME II Problem 10
22716 2010 AIME II Problem 9
22715 2010 AIME II Problem 8
22714 2010 AIME II Problem 7
22713 2010 AIME II Problem 6
22712 2010 AIME II Problem 5
22711 2010 AIME II Problem 4
22710 2010 AIME II Problem 3
22709 2010 AIME II Problem 2
22708 2010 AIME II Problem 1
22707 2010 AIME I Problem 15
22706 2010 AIME I Problem 14
22705 2010 AIME I Problem 13
22704 2010 AIME I Problem 12
22703 2010 AIME I Problem 11
22702 2010 AIME I Problem 10
22701 2010 AIME I Problem 9
22700 2010 AIME I Problem 8
22699 2010 AIME I Problem 7
22698 2010 AIME I Problem 6
22697 2010 AIME I Problem 5
22696 2010 AIME I Problem 4
22695 2010 AIME I Problem 3
22694 2010 AIME I Problem 2
22693 2010 AIME I Problem 1
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