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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)
7950 Codeforces 1709B: Also Try Minecraft
7949 Codeforces 1709A: Three Doors
7948 Codeforces 1708B: Difference of GCDs
7947 Codeforces 1708A: Difference Operations
7946 Codeforces 1707F: Bugaboo
7945 Codeforces 1707E: Replace
7944 Codeforces 1707D: Partial Virtual Trees
7943 Codeforces 1707C: DFS Trees
7942 Codeforces 1707B: Difference Array
7941 Codeforces 1707A: Doremy's IQ
7940 Codeforces 1706E: Qpwoeirut and Vertices
7939 Codeforces 1706D2: Chopping Carrots (Hard Version)
7938 Codeforces 1706D1: Chopping Carrots (Easy Version)
7937 Codeforces 1706C: Qpwoeirut And The City
7936 Codeforces 1706B: Making Towers
7935 Codeforces 1706A: Another String Minimization Problem
7934 Codeforces 1705F: Mark and the Online Exam
7933 Codeforces 1705E: Mark and Professor Koro
7932 Codeforces 1705D: Mark and Lightbulbs
7931 Codeforces 1705C: Mark and His Unfinished Essay
7930 Codeforces 1705B: Mark the Dust Sweeper
7929 Codeforces 1705A: Mark the Photographer
7928 Codeforces 1704H2: Game of AI (hard version)
7927 Codeforces 1704H1: Game of AI (easy version)
7926 Codeforces 1704G: Mio and Lucky Array
7925 Codeforces 1704F: Colouring Game
7924 Codeforces 1704E: Count Seconds
7923 Codeforces 1704D: Magical Array
7922 Codeforces 1704C: Virus
7921 Codeforces 1704B: Luke is a Foodie
7920 Codeforces 1704A: Two 0-1 Sequences
7919 Codeforces 1703G: Good Key, Bad Key
7918 Codeforces 1703F: Yet Another Problem About Pairs Satisfying an Inequality
7917 Codeforces 1703E: Mirror Grid
7916 Codeforces 1703D: Double Strings
7915 Codeforces 1703C: Cypher
7914 Codeforces 1703B: ICPC Balloons
7913 Codeforces 1703A: YES or YES?
7912 Codeforces 1702G2: Passable Paths (hard version)
7911 Codeforces 1702G1: Passable Paths (easy version)
7910 Codeforces 1702F: Equate Multisets
7909 Codeforces 1702E: Split Into Two Sets
7908 Codeforces 1702D: Not a Cheap String
7907 Codeforces 1702C: Train and Queries
7906 Codeforces 1702B: Polycarp Writes a String from Memory
7905 Codeforces 1702A: Round Down the Price
7904 Codeforces 1701F: Points
7903 Codeforces 1701E: Text Editor
7902 Codeforces 1701D: Permutation Restoration
7901 Codeforces 1701C: Schedule Management
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