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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)
8650 Codeforces 1826E: Walk the Runway
8649 Codeforces 1826D: Running Miles
8648 Codeforces 1826C: Dreaming of Freedom
8647 Codeforces 1826B: Lunatic Never Content
8646 Codeforces 1826A: Trust Nobody
8645 Codeforces 1825B: LuoTianyi and the Table
8644 Codeforces 1825A: LuoTianyi and the Palindrome String
8643 Codeforces 1824E: LuoTianyi and Cartridge
8642 Codeforces 1824D: LuoTianyi and the Function
8641 Codeforces 1824C: LuoTianyi and XOR-Tree
8640 Codeforces 1824B2: LuoTianyi and the Floating Islands (Hard Version)
8639 Codeforces 1824B1: LuoTianyi and the Floating Islands (Easy Version)
8638 Codeforces 1824A: LuoTianyi and the Show
8637 Codeforces 1823F: Random Walk
8636 Codeforces 1823E: Removing Graph
8635 Codeforces 1823D: Unique Palindromes
8634 Codeforces 1823C: Strongly Composite
8633 Codeforces 1823B: Sort with Step
8632 Codeforces 1823A: A-characteristic
8631 Codeforces 1822G2: Magic Triples (Hard Version)
8630 Codeforces 1822G1: Magic Triples (Easy Version)
8629 Codeforces 1822F: Gardening Friends
8628 Codeforces 1822E: Making Anti-Palindromes
8627 Codeforces 1822D: Super-Permutation
8626 Codeforces 1822C: Bun Lover
8625 Codeforces 1822B: Karina and Array
8624 Codeforces 1822A: TubeTube Feed
8623 Codeforces 1821F: Timber
8622 Codeforces 1821E: Rearrange Brackets
8621 Codeforces 1821D: Black Cells
8620 Codeforces 1821C: Tear It Apart
8619 Codeforces 1821B: Sort the Subarray
8618 Codeforces 1821A: Matching
8617 Codeforces 1820B: JoJo's Incredible Adventures
8616 Codeforces 1820A: Yura's New Name
8615 Codeforces 1819F: Willy-nilly, Crack, Into Release!
8614 Codeforces 1819E: Roads in E City
8613 Codeforces 1819D: Misha and Apples
8612 Codeforces 1819C: The Fox and the Complete Tree Traversal
8611 Codeforces 1819B: The Butcher
8610 Codeforces 1819A: Constructive Problem
8609 Codeforces 1818B: Indivisible
8608 Codeforces 1818A: Politics
8607 Codeforces 1817F: Entangled Substrings
8606 Codeforces 1817E: Half-sum
8605 Codeforces 1817D: Toy Machine
8604 Codeforces 1817C: Similar Polynomials
8603 Codeforces 1817B: Fish Graph
8602 Codeforces 1817A: Almost Increasing Subsequence
8601 Codeforces 1816B: Grid Reconstruction
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