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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)
7400 Codeforces 1613B: Absent Remainder
7399 Codeforces 1613A: Long Comparison
7398 Codeforces 1612G: Max Sum Array
7397 Codeforces 1612F: Armor and Weapons
7396 Codeforces 1612E: Messages
7395 Codeforces 1612D: X-Magic Pair
7394 Codeforces 1612C: Chat Ban
7393 Codeforces 1612B: Special Permutation
7392 Codeforces 1612A: Distance
7391 Codeforces 1611G: Robot and Candies
7390 Codeforces 1611F: ATM and Students
7389 Codeforces 1611E2: Escape The Maze (hard version)
7388 Codeforces 1611E1: Escape The Maze (easy version)
7387 Codeforces 1611D: Weights Assignment For Tree Edges
7386 Codeforces 1611C: Polycarp Recovers the Permutation
7385 Codeforces 1611B: Team Composition: Programmers and Mathematicians
7384 Codeforces 1611A: Make Even
7383 Codeforces 1610I: Mashtali vs AtCoder
7382 Codeforces 1610H: Squid Game
7381 Codeforces 1610G: AmShZ Wins a Bet
7380 Codeforces 1610F: Mashtali: a Space Oddysey
7379 Codeforces 1610E: AmShZ and G.O.A.T.
7378 Codeforces 1610D: Not Quite Lee
7377 Codeforces 1610C: Keshi Is Throwing a Party
7376 Codeforces 1610B: Kalindrome Array
7375 Codeforces 1610A: Anti Light's Cell Guessing
7374 Codeforces 1609H: Pushing Robots
7373 Codeforces 1609G: A Stroll Around the Matrix
7372 Codeforces 1609F: Interesting Sections
7371 Codeforces 1609E: William The Oblivious
7370 Codeforces 1609D: Social Network
7369 Codeforces 1609C: Complex Market Analysis
7368 Codeforces 1609B: William the Vigilant
7367 Codeforces 1609A: Divide and Multiply
7366 Codeforces 1608G: Alphabetic Tree
7365 Codeforces 1608F: MEX counting
7364 Codeforces 1608E: The Cells on the Paper
7363 Codeforces 1608D: Dominoes
7362 Codeforces 1608C: Game Master
7361 Codeforces 1608B: Build the Permutation
7360 Codeforces 1608A: Find Array
7359 Codeforces 1607H: Banquet Preparations 2
7358 Codeforces 1607G: Banquet Preparations 1
7357 Codeforces 1607F: Robot on the Board 2
7356 Codeforces 1607E: Robot on the Board 1
7355 Codeforces 1607D: Blue-Red Permutation
7354 Codeforces 1607C: Minimum Extraction
7353 Codeforces 1607B: Odd Grasshopper
7352 Codeforces 1607A: Linear Keyboard
7351 Codeforces 1606F: Tree Queries
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