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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)
21552 2004 AMC 12B Problem 25
21551 2004 AMC 12B Problem 24
21550 2004 AMC 12B Problem 23
21549 2004 AMC 12B Problem 22
21548 2004 AMC 12B Problem 21
21547 2004 AMC 12B Problem 20
21546 2004 AMC 12B Problem 19
21545 2004 AMC 12B Problem 18
21544 2004 AMC 12B Problem 17
21543 2004 AMC 12B Problem 16
21542 2004 AMC 12B Problem 15
21541 2004 AMC 12B Problem 14
21540 2004 AMC 12B Problem 13
21539 2004 AMC 12B Problem 12
21538 2004 AMC 12B Problem 11
21537 2004 AMC 12B Problem 10
21536 2004 AMC 12B Problem 9
21535 2004 AMC 12B Problem 8
21534 2004 AMC 12B Problem 7
21533 2004 AMC 12B Problem 6
21532 2004 AMC 12B Problem 5
21531 2004 AMC 12B Problem 4
21530 2004 AMC 12B Problem 3
21529 2004 AMC 12B Problem 2
21528 2004 AMC 12B Problem 1
21527 2004 AMC 12A Problem 25
21526 2004 AMC 12A Problem 24
21525 2004 AMC 12A Problem 23
21524 2004 AMC 12A Problem 22
21523 2004 AMC 12A Problem 21
21522 2004 AMC 12A Problem 20
21521 2004 AMC 12A Problem 19
21520 2004 AMC 12A Problem 18
21519 2004 AMC 12A Problem 17
21518 2004 AMC 12A Problem 16
21517 2004 AMC 12A Problem 15
21516 2004 AMC 12A Problem 14
21515 2004 AMC 12A Problem 13
21514 2004 AMC 12A Problem 12
21513 2004 AMC 12A Problem 11
21512 2004 AMC 12A Problem 10
21511 2004 AMC 12A Problem 9
21510 2004 AMC 12A Problem 8
21509 2004 AMC 12A Problem 7
21508 2004 AMC 12A Problem 6
21507 2004 AMC 12A Problem 5
21506 2004 AMC 12A Problem 4
21505 2004 AMC 12A Problem 3
21504 2004 AMC 12A Problem 2
21503 2004 AMC 12A Problem 1
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