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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)
25047 Codeforces 1949H: Division Avoidance
25046 Codeforces 1949G: Scooter
25045 Codeforces 1949F: Dating
25044 Codeforces 1949E: Damage per Second
25043 Codeforces 1949D: Funny or Scary?
25042 Codeforces 1949C: Annual Ants' Gathering
25041 Codeforces 1949B: Charming Meals
25040 Codeforces 1949A: Grove
25039 Codeforces 1948G: MST with Matching
25038 Codeforces 1948F: Rare Coins
25037 Codeforces 1948E: Clique Partition
25036 Codeforces 1948D: Tandem Repeats?
25035 Codeforces 1948C: Arrow Path
25034 Codeforces 1948B: Array Fix
25033 Codeforces 1948A: Special Characters
25032 Codeforces 1946F: Nobody is needed
25031 Codeforces 1946E: Girl Permutation
25030 Codeforces 1946D: Birthday Gift
25029 Codeforces 1946C: Tree Cutting
25028 Codeforces 1946B: Maximum Sum
25027 Codeforces 1946A: Median of an Array
25026 Codeforces 1945H: GCD is Greater
25025 Codeforces 1945G: Cook and Porridge
25024 Codeforces 1945F: Kirill and Mushrooms
25023 Codeforces 1945E: Binary Search
25022 Codeforces 1945D: Seraphim the Owl
25021 Codeforces 1945C: Left and Right Houses
25020 Codeforces 1945B: Fireworks
25019 Codeforces 1945A: Setting up Camp
25018 Codeforces 1944B: Equal XOR
25017 Codeforces 1944A: Destroying Bridges
25016 Codeforces 1943F: Minimum Hamming Distance
25015 Codeforces 1943E2: MEX Game 2 (Hard Version)
25014 Codeforces 1943E1: MEX Game 2 (Easy Version)
25013 Codeforces 1943D2: Counting Is Fun (Hard Version)
25012 Codeforces 1943D1: Counting Is Fun (Easy Version)
25011 Codeforces 1943C: Tree Compass
25010 Codeforces 1943B: Non-Palindromic Substring
25009 Codeforces 1943A: MEX Game 1
25008 Codeforces 1942H: Farmer John's Favorite Intern
25007 Codeforces 1942G: Bessie and Cards
25006 Codeforces 1942F: Farmer John's Favorite Function
25005 Codeforces 1942E: Farm Game
25004 Codeforces 1942D: Learning to Paint
25003 Codeforces 1942C2: Bessie's Birthday Cake (Hard Version)
25002 Codeforces 1942C1: Bessie's Birthday Cake (Easy Version)
25001 Codeforces 1942B: Bessie and MEX
25000 Codeforces 1942A: Farmer John's Challenge
24999 Codeforces 1941G: Rudolf and Subway
24998 Codeforces 1941F: Rudolf and Imbalance
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