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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)
23807 Codeforces 1860A: Not a Substring
8849 Codeforces 1859F: Teleportation in Byteland
8848 Codeforces 1859E: Maximum Monogonosity
8847 Codeforces 1859D: Andrey and Escape from Capygrad
8846 Codeforces 1859C: Another Permutation Problem
8845 Codeforces 1859B: Olya and Game with Arrays
8844 Codeforces 1859A: United We Stand
8843 Codeforces 1858E2: Rollbacks (Hard Version)
8842 Codeforces 1858E1: Rollbacks (Easy Version)
8841 Codeforces 1858D: Trees and Segments
8840 Codeforces 1858C: Yet Another Permutation Problem
8839 Codeforces 1858B: The Walkway
8838 Codeforces 1858A: Buttons
8837 Codeforces 1857G: Counting Graphs
8836 Codeforces 1857F: Sum and Product
8835 Codeforces 1857E: Power of Points
8834 Codeforces 1857D: Strong Vertices
8833 Codeforces 1857C: Assembly via Minimums
8832 Codeforces 1857B: Maximum Rounding
8831 Codeforces 1857A: Array Coloring
8830 Codeforces 1856E2: PermuTree (hard version)
8829 Codeforces 1856E1: PermuTree (easy version)
8828 Codeforces 1856D: More Wrong
8827 Codeforces 1856C: To Become Max
8826 Codeforces 1856B: Good Arrays
8825 Codeforces 1856A: Tales of a Sort
8824 Codeforces 1855B: Longest Divisors Interval
8823 Codeforces 1855A: Dalton the Teacher
8822 Codeforces 1854F: Mark and Spaceship
8821 Codeforces 1854E: Game Bundles
8820 Codeforces 1854D: Michael and Hotel
8819 Codeforces 1854C: Expected Destruction
8818 Codeforces 1854B: Earn or Unlock
8817 Codeforces 1854A2: Dual (Hard Version)
8816 Codeforces 1854A1: Dual (Easy Version)
8815 Codeforces 1853B: Fibonaccharsis
8814 Codeforces 1853A: Desorting
8813 Codeforces 1852F: Panda Meetups
8812 Codeforces 1852E: Rivalries
8811 Codeforces 1852D: Miriany and Matchstick
8810 Codeforces 1852C: Ina of the Mountain
8809 Codeforces 1852B: Imbalanced Arrays
8808 Codeforces 1852A: Ntarsis' Set
8807 Codeforces 1851G: Vlad and the Mountains
8806 Codeforces 1851F: Lisa and the Martians
8805 Codeforces 1851E: Nastya and Potions
8804 Codeforces 1851D: Prefix Permutation Sums
8803 Codeforces 1851C: Tiles Comeback
8802 Codeforces 1851B: Parity Sort
8801 Codeforces 1851A: Escalator Conversations
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