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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)
24897 Codeforces 1923B: Monsters Attack!
24896 Codeforces 1923A: Moving Chips
24822 Codeforces 1927G: Paint Charges
24821 Codeforces 1927F: Microcycle
24820 Codeforces 1927E: Klever Permutation
24819 Codeforces 1927D: Find the Different Ones!
24818 Codeforces 1927C: Choose the Different Ones!
24817 Codeforces 1927B: Following the String
24816 Codeforces 1927A: Make it White
24815 Codeforces 1918G: Permutation of Given
24814 Codeforces 1918F: Caterpillar on a Tree
24813 Codeforces 1918E: ace5 and Task Order
24812 Codeforces 1918D: Blocking Elements
24811 Codeforces 1918C: XOR-distance
24810 Codeforces 1918B: Minimize Inversions
24809 Codeforces 1918A: Brick Wall
24780 Codeforces 1925D: Good Trip
24779 Codeforces 1925B: A Balanced Problemset?
24778 Codeforces 1925A: We Got Everything Covered!
24777 Codeforces 1924F: Anti-Proxy Attendance
24776 Codeforces 1924E: Paper Cutting Again
24775 Codeforces 1924D: Balanced Subsequences
24774 Codeforces 1924C: Fractal Origami
24773 Codeforces 1924B: Space Harbour
24772 Codeforces 1924A: Did We Get Everything Covered?
24510 Codeforces 1922F: Replace on Segment
24509 Codeforces 1922E: Increasing Subsequences
24508 Codeforces 1922D: Berserk Monsters
24507 Codeforces 1922C: Closest Cities
24506 Codeforces 1922B: Forming Triangles
24505 Codeforces 1922A: Tricky Template
24504 Codeforces 1921G: Mischievous Shooter
24503 Codeforces 1921F: Sum of Progression
24502 Codeforces 1921E: Eat the Chip
24501 Codeforces 1921D: Very Different Array
24500 Codeforces 1921C: Sending Messages
24499 Codeforces 1921B: Arranging Cats
24498 Codeforces 1921A: Square
24497 Codeforces 1920F2: Smooth Sailing (Hard Version)
24496 Codeforces 1920F1: Smooth Sailing (Easy Version)
24495 Codeforces 1920E: Counting Binary Strings
24494 Codeforces 1920D: Array Repetition
24493 Codeforces 1920C: Partitioning the Array
24492 Codeforces 1920B: Summation Game
24491 Codeforces 1920A: Satisfying Constraints
24490 Codeforces 1919H: Tree Diameter
24489 Codeforces 1919G: Tree LGM
24488 Codeforces 1919F2: Wine Factory (Hard Version)
24487 Codeforces 1919F1: Wine Factory (Easy Version)
24486 Codeforces 1919E: Counting Prefixes
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