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)
21852 2010 AMC 12B Problem 25
21851 2010 AMC 12B Problem 24
21850 2010 AMC 12B Problem 23
21849 2010 AMC 12B Problem 22
21848 2010 AMC 12B Problem 21
21847 2010 AMC 12B Problem 20
21846 2010 AMC 12B Problem 19
21845 2010 AMC 12B Problem 18
21844 2010 AMC 12B Problem 17
21843 2010 AMC 12B Problem 16
21842 2010 AMC 12B Problem 15
21841 2010 AMC 12B Problem 14
21840 2010 AMC 12B Problem 13
21839 2010 AMC 12B Problem 12
21838 2010 AMC 12B Problem 11
21837 2010 AMC 12B Problem 10
21836 2010 AMC 12B Problem 9
21835 2010 AMC 12B Problem 8
21834 2010 AMC 12B Problem 7
21833 2010 AMC 12B Problem 6
21832 2010 AMC 12B Problem 5
21831 2010 AMC 12B Problem 4
21830 2010 AMC 12B Problem 3
21829 2010 AMC 12B Problem 2
21828 2010 AMC 12B Problem 1
21827 2010 AMC 12A Problem 25
21826 2010 AMC 12A Problem 24
21825 2010 AMC 12A Problem 23
21824 2010 AMC 12A Problem 22
21823 2010 AMC 12A Problem 21
21822 2010 AMC 12A Problem 20
21821 2010 AMC 12A Problem 19
21820 2010 AMC 12A Problem 18
21819 2010 AMC 12A Problem 17
21818 2010 AMC 12A Problem 16
21817 2010 AMC 12A Problem 15
21816 2010 AMC 12A Problem 14
21815 2010 AMC 12A Problem 13
21814 2010 AMC 12A Problem 12
21813 2010 AMC 12A Problem 11
21812 2010 AMC 12A Problem 10
21811 2010 AMC 12A Problem 9
21810 2010 AMC 12A Problem 8
21809 2010 AMC 12A Problem 7
21808 2010 AMC 12A Problem 6
21807 2010 AMC 12A Problem 5
21806 2010 AMC 12A Problem 4
21805 2010 AMC 12A Problem 3
21804 2010 AMC 12A Problem 2
21803 2010 AMC 12A Problem 1
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