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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)
8050 Codeforces 1728A: Colored Balls: Revisited
8049 Codeforces 1726H: Mainak and the Bleeding Polygon
8048 Codeforces 1726G: A Certain Magical Party
8047 Codeforces 1726F: Late For Work (submissions are not allowed)
8046 Codeforces 1726E: Almost Perfect
8045 Codeforces 1726D: Edge Split
8044 Codeforces 1726C: Jatayu's Balanced Bracket Sequence
8043 Codeforces 1726B: Mainak and Interesting Sequence
8042 Codeforces 1726A: Mainak and Array
8041 Codeforces 1725M: Moving Both Hands
8040 Codeforces 1725L: Lemper Cooking Competition
8039 Codeforces 1725K: Kingdom of Criticism
8038 Codeforces 1725J: Journey
8037 Codeforces 1725I: Imitating the Key Tree
8036 Codeforces 1725H: Hot Black Hot White
8035 Codeforces 1725G: Garage
8034 Codeforces 1725F: Field Photography
8033 Codeforces 1725E: Electrical Efficiency
8032 Codeforces 1725D: Deducing Sortability
8031 Codeforces 1725C: Circular Mirror
8030 Codeforces 1725B: Basketball Together
8029 Codeforces 1725A: Accumulation of Dominoes
8028 Codeforces 1722G: Even-Odd XOR
8027 Codeforces 1722F: L-shapes
8026 Codeforces 1722E: Counting Rectangles
8025 Codeforces 1722D: Line
8024 Codeforces 1722C: Word Game
8023 Codeforces 1722B: Colourblindness
8022 Codeforces 1722A: Spell Check
8021 Codeforces 1721F: Matching Reduction
8020 Codeforces 1721E: Prefix Function Queries
8019 Codeforces 1721D: Maximum AND
8018 Codeforces 1721C: Min-Max Array Transformation
8017 Codeforces 1721B: Deadly Laser
8016 Codeforces 1721A: Image
8015 Codeforces 1720E: Misha and Paintings
8014 Codeforces 1720D2: Xor-Subsequence (hard version)
8013 Codeforces 1720D1: Xor-Subsequence (easy version)
8012 Codeforces 1720C: Corners
8011 Codeforces 1720B: Interesting Sum
8010 Codeforces 1720A: Burenka Plays with Fractions
8009 Codeforces 1719C: Fighting Tournament
8008 Codeforces 1719B: Mathematical Circus
8007 Codeforces 1719A: Chip Game
8006 Codeforces 1718F: Burenka, an Array and Queries
8005 Codeforces 1718E: Impressionism
8004 Codeforces 1718D: Permutation for Burenka
8003 Codeforces 1718C: Tonya and Burenka-179
8002 Codeforces 1718B: Fibonacci Strings
8001 Codeforces 1718A2: Burenka and Traditions (hard version)
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