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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)
7050 Codeforces 1543D1: RPD and Rap Sheet (Easy Version)
7049 Codeforces 1543C: Need for Pink Slips
7048 Codeforces 1543B: Customising the Track
7047 Codeforces 1543A: Exciting Bets
7046 Codeforces 1542E2: Abnormal Permutation Pairs (hard version)
7045 Codeforces 1542E1: Abnormal Permutation Pairs (easy version)
7044 Codeforces 1542D: Priority Queue
7043 Codeforces 1542C: Strange Function
7042 Codeforces 1542B: Plus and Multiply
7041 Codeforces 1542A: Odd Set
7040 Codeforces 1541B: Pleasant Pairs
7039 Codeforces 1541A: Pretty Permutations
7038 Codeforces 1540E: Tasty Dishes
7037 Codeforces 1540D: Inverse Inversions
7036 Codeforces 1540C2: Converging Array (Hard Version)
7035 Codeforces 1540C1: Converging Array (Easy Version)
7034 Codeforces 1540B: Tree Array
7033 Codeforces 1540A: Great Graphs
7032 Codeforces 1539F: Strange Array
7031 Codeforces 1539E: Game with Cards
7030 Codeforces 1539D: PriceFixed
7029 Codeforces 1539C: Stable Groups
7028 Codeforces 1539B: Love Song
7027 Codeforces 1539A: Contest Start
7026 Codeforces 1538G: Gift Set
7025 Codeforces 1538F: Interesting Function
7024 Codeforces 1538E: Funny Substrings
7023 Codeforces 1538D: Another Problem About Dividing Numbers
7022 Codeforces 1538C: Number of Pairs
7021 Codeforces 1538B: Friends and Candies
7020 Codeforces 1538A: Stone Game
7019 Codeforces 1537F: Figure Fixing
7018 Codeforces 1537E2: Erase and Extend (Hard Version)
7017 Codeforces 1537E1: Erase and Extend (Easy Version)
7016 Codeforces 1537D: Deleting Divisors
7015 Codeforces 1537C: Challenging Cliffs
7014 Codeforces 1537B: Bad Boy
7013 Codeforces 1537A: Arithmetic Array
7012 Codeforces 1536F: Omkar and Akmar
7011 Codeforces 1536E: Omkar and Forest
7010 Codeforces 1536D: Omkar and Medians
7009 Codeforces 1536C: Diluc and Kaeya
7008 Codeforces 1536B: Prinzessin der Verurteilung
7007 Codeforces 1536A: Omkar and Bad Story
7006 Codeforces 1535F: String Distance
7005 Codeforces 1535E: Gold Transfer
7004 Codeforces 1535D: Playoff Tournament
7003 Codeforces 1535C: Unstable String
7002 Codeforces 1535B: Array Reodering
7001 Codeforces 1535A: Fair Playoff
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