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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)
21602 2005 AMC 12B Problem 25
21601 2005 AMC 12B Problem 24
21600 2005 AMC 12B Problem 23
21599 2005 AMC 12B Problem 22
21598 2005 AMC 12B Problem 21
21597 2005 AMC 12B Problem 20
21596 2005 AMC 12B Problem 19
21595 2005 AMC 12B Problem 18
21594 2005 AMC 12B Problem 17
21593 2005 AMC 12B Problem 16
21592 2005 AMC 12B Problem 15
21591 2005 AMC 12B Problem 14
21590 2005 AMC 12B Problem 13
21589 2005 AMC 12B Problem 12
21588 2005 AMC 12B Problem 11
21587 2005 AMC 12B Problem 10
21586 2005 AMC 12B Problem 9
21585 2005 AMC 12B Problem 8
21584 2005 AMC 12B Problem 7
21583 2005 AMC 12B Problem 6
21582 2005 AMC 12B Problem 5
21581 2005 AMC 12B Problem 4
21580 2005 AMC 12B Problem 3
21579 2005 AMC 12B Problem 2
21578 2005 AMC 12B Problem 1
21577 2005 AMC 12A Problem 25
21576 2005 AMC 12A Problem 24
21575 2005 AMC 12A Problem 23
21574 2005 AMC 12A Problem 22
21573 2005 AMC 12A Problem 21
21572 2005 AMC 12A Problem 20
21571 2005 AMC 12A Problem 19
21570 2005 AMC 12A Problem 18
21569 2005 AMC 12A Problem 17
21568 2005 AMC 12A Problem 16
21567 2005 AMC 12A Problem 15
21566 2005 AMC 12A Problem 14
21565 2005 AMC 12A Problem 13
21564 2005 AMC 12A Problem 12
21563 2005 AMC 12A Problem 11
21562 2005 AMC 12A Problem 10
21561 2005 AMC 12A Problem 9
21560 2005 AMC 12A Problem 8
21559 2005 AMC 12A Problem 7
21558 2005 AMC 12A Problem 6
21557 2005 AMC 12A Problem 5
21556 2005 AMC 12A Problem 4
21555 2005 AMC 12A Problem 3
21554 2005 AMC 12A Problem 2
21553 2005 AMC 12A Problem 1
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