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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)
8200 Codeforces 1753B: Factorial Divisibility
8199 Codeforces 1753A2: Make Nonzero Sum (hard version)
8198 Codeforces 1753A1: Make Nonzero Sum (easy version)
8197 Codeforces 1750H: BinaryStringForces
8196 Codeforces 1750G: Doping
8195 Codeforces 1750F: Majority
8194 Codeforces 1750E: Bracket Cost
8193 Codeforces 1750D: Count GCD
8192 Codeforces 1750C: Complementary XOR
8191 Codeforces 1750B: Maximum Substring
8190 Codeforces 1750A: Indirect Sort
8189 Codeforces 1749F: Distance to the Path
8188 Codeforces 1749E: Cactus Wall
8187 Codeforces 1749D: Counting Arrays
8186 Codeforces 1749C: Number Game
8185 Codeforces 1749B: Death's Blessing
8184 Codeforces 1749A: Cowardly Rooks
8183 Codeforces 1748F: Circular Xor Reversal
8182 Codeforces 1748E: Yet Another Array Counting Problem
8181 Codeforces 1748D: ConstructOR
8180 Codeforces 1748C: Zero-Sum Prefixes
8179 Codeforces 1748B: Diverse Substrings
8178 Codeforces 1748A: The Ultimate Square
8177 Codeforces 1747E: List Generation
8176 Codeforces 1747D: Yet Another Problem
8175 Codeforces 1747C: Swap Game
8174 Codeforces 1747B: BAN BAN
8173 Codeforces 1747A: Two Groups
8172 Codeforces 1746G: Olympiad Training
8171 Codeforces 1746F: Kazaee
8170 Codeforces 1746E2: Joking (Hard Version)
8169 Codeforces 1746E1: Joking (Easy Version)
8168 Codeforces 1746D: Paths on the Tree
8167 Codeforces 1746C: Permutation Operations
8166 Codeforces 1746B: Rebellion
8165 Codeforces 1746A: Maxmina
8164 Codeforces 1744F: MEX vs MED
8163 Codeforces 1744E2: Divisible Numbers (hard version)
8162 Codeforces 1744E1: Divisible Numbers (easy version)
8161 Codeforces 1744D: Divisibility by 2^n
8160 Codeforces 1744C: Traffic Light
8159 Codeforces 1744B: Even-Odd Increments
8158 Codeforces 1744A: Number Replacement
8157 Codeforces 1743G: Antifibonacci Cut
8156 Codeforces 1743F: Intersection and Union
8155 Codeforces 1743E: FTL
8154 Codeforces 1743D: Problem with Random Tests
8153 Codeforces 1743C: Save the Magazines
8152 Codeforces 1743B: Permutation Value
8151 Codeforces 1743A: Password
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