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)
21952 2012 AMC 12B Problem 25
21951 2012 AMC 12B Problem 24
21950 2012 AMC 12B Problem 23
21949 2012 AMC 12B Problem 22
21948 2012 AMC 12B Problem 21
21947 2012 AMC 12B Problem 20
21946 2012 AMC 12B Problem 19
21945 2012 AMC 12B Problem 18
21944 2012 AMC 12B Problem 17
21943 2012 AMC 12B Problem 16
21942 2012 AMC 12B Problem 15
21941 2012 AMC 12B Problem 14
21940 2012 AMC 12B Problem 13
21939 2012 AMC 12B Problem 12
21938 2012 AMC 12B Problem 11
21937 2012 AMC 12B Problem 10
21936 2012 AMC 12B Problem 9
21935 2012 AMC 12B Problem 8
21934 2012 AMC 12B Problem 7
21933 2012 AMC 12B Problem 6
21932 2012 AMC 12B Problem 5
21931 2012 AMC 12B Problem 4
21930 2012 AMC 12B Problem 3
21929 2012 AMC 12B Problem 2
21928 2012 AMC 12B Problem 1
21927 2012 AMC 12A Problem 25
21926 2012 AMC 12A Problem 24
21925 2012 AMC 12A Problem 23
21924 2012 AMC 12A Problem 22
21923 2012 AMC 12A Problem 21
21922 2012 AMC 12A Problem 20
21921 2012 AMC 12A Problem 19
21920 2012 AMC 12A Problem 18
21919 2012 AMC 12A Problem 17
21918 2012 AMC 12A Problem 16
21917 2012 AMC 12A Problem 15
21916 2012 AMC 12A Problem 14
21915 2012 AMC 12A Problem 13
21914 2012 AMC 12A Problem 12
21913 2012 AMC 12A Problem 11
21912 2012 AMC 12A Problem 10
21911 2012 AMC 12A Problem 9
21910 2012 AMC 12A Problem 8
21909 2012 AMC 12A Problem 7
21908 2012 AMC 12A Problem 6
21907 2012 AMC 12A Problem 5
21906 2012 AMC 12A Problem 4
21905 2012 AMC 12A Problem 3
21904 2012 AMC 12A Problem 2
21903 2012 AMC 12A Problem 1
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