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)
21702 2007 AMC 12B Problem 25
21701 2007 AMC 12B Problem 24
21700 2007 AMC 12B Problem 23
21699 2007 AMC 12B Problem 22
21698 2007 AMC 12B Problem 21
21697 2007 AMC 12B Problem 20
21696 2007 AMC 12B Problem 19
21695 2007 AMC 12B Problem 18
21694 2007 AMC 12B Problem 17
21693 2007 AMC 12B Problem 16
21692 2007 AMC 12B Problem 15
21691 2007 AMC 12B Problem 14
21690 2007 AMC 12B Problem 13
21689 2007 AMC 12B Problem 12
21688 2007 AMC 12B Problem 11
21687 2007 AMC 12B Problem 10
21686 2007 AMC 12B Problem 9
21685 2007 AMC 12B Problem 8
21684 2007 AMC 12B Problem 7
21683 2007 AMC 12B Problem 6
21682 2007 AMC 12B Problem 5
21681 2007 AMC 12B Problem 4
21680 2007 AMC 12B Problem 3
21679 2007 AMC 12B Problem 2
21678 2007 AMC 12B Problem 1
21677 2007 AMC 12A Problem 25
21676 2007 AMC 12A Problem 24
21675 2007 AMC 12A Problem 23
21674 2007 AMC 12A Problem 22
21673 2007 AMC 12A Problem 21
21672 2007 AMC 12A Problem 20
21671 2007 AMC 12A Problem 19
21670 2007 AMC 12A Problem 18
21669 2007 AMC 12A Problem 17
21668 2007 AMC 12A Problem 16
21667 2007 AMC 12A Problem 15
21666 2007 AMC 12A Problem 14
21665 2007 AMC 12A Problem 13
21664 2007 AMC 12A Problem 12
21663 2007 AMC 12A Problem 11
21662 2007 AMC 12A Problem 10
21661 2007 AMC 12A Problem 9
21660 2007 AMC 12A Problem 8
21659 2007 AMC 12A Problem 7
21658 2007 AMC 12A Problem 6
21657 2007 AMC 12A Problem 5
21656 2007 AMC 12A Problem 4
21655 2007 AMC 12A Problem 3
21654 2007 AMC 12A Problem 2
21653 2007 AMC 12A Problem 1
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