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  • AMC 8: [year] AMC 8 Problem #, Ex: 2013 AMC 8 Problem 1
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  • AMC 12: [year] AMC 12A Problem # OR [year] AMC 12B Problem #, Ex: 2021 AMC 12B Problem 25
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ID Problem Name (click to add insights/hints, view summary of insights/hints and similar problems)
5055 Codeforces 1157C2: Increasing Subsequence (hard version)
5054 Codeforces 1157C1: Increasing Subsequence (easy version)
5053 Codeforces 1157B: Long Number
5052 Codeforces 1157A: Reachable Numbers
5051 Codeforces 1156G: Optimizer
5050 Codeforces 1156F: Card Bag
5049 Codeforces 1156E: Special Segments of Permutation
5048 Codeforces 1156D: 0-1-Tree
5047 Codeforces 1156C: Match Points
5046 Codeforces 1156B: Ugly Pairs
5045 Codeforces 1156A: Inscribed Figures
5044 Codeforces 1155F: Delivery Oligopoly
5043 Codeforces 1155E: Guess the Root
5042 Codeforces 1155D: Beautiful Array
5041 Codeforces 1155C: Alarm Clocks Everywhere
5040 Codeforces 1155B: Game with Telephone Numbers
5039 Codeforces 1155A: Reverse a Substring
5038 Codeforces 1154G: Minimum Possible LCM
5037 Codeforces 1154F: Shovels Shop
5036 Codeforces 1154E: Two Teams
5035 Codeforces 1154D: Walking Robot
5034 Codeforces 1154C: Gourmet Cat
5033 Codeforces 1154B: Make Them Equal
5032 Codeforces 1154A: Restoring Three Numbers
5031 Codeforces 1153F: Serval and Bonus Problem
5030 Codeforces 1153E: Serval and Snake
5029 Codeforces 1153D: Serval and Rooted Tree
5028 Codeforces 1153C: Serval and Parenthesis Sequence
5027 Codeforces 1153B: Serval and Toy Bricks
5026 Codeforces 1153A: Serval and Bus
5025 Codeforces 1152F2: Neko Rules the Catniverse (Large Version)
5024 Codeforces 1152F1: Neko Rules the Catniverse (Small Version)
5023 Codeforces 1152E: Neko and Flashback
5022 Codeforces 1152D: Neko and Aki's Prank
5021 Codeforces 1152C: Neko does Maths
5020 Codeforces 1152B: Neko Performs Cat Furrier Transform
5019 Codeforces 1152A: Neko Finds Grapes
5018 Codeforces 1151F: Sonya and Informatics
5017 Codeforces 1151E: Number of Components
5016 Codeforces 1151D: Stas and the Queue at the Buffet
5015 Codeforces 1151C: Problem for Nazar
5014 Codeforces 1151B: Dima and a Bad XOR
5013 Codeforces 1151A: Maxim and Biology
5012 Codeforces 1150B: Tiling Challenge
5011 Codeforces 1150A: Stock Arbitraging
5010 Codeforces 1149E: Election Promises
5009 Codeforces 1149D: Abandoning Roads
5008 Codeforces 1149C: Tree Generatorâ„¢
5007 Codeforces 1149B: Three Religions
5006 Codeforces 1149A: Prefix Sum Primes
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