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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)
25097 Codeforces 1956E2: Nene vs. Monsters (Hard Version)
25096 Codeforces 1956E1: Nene vs. Monsters (Easy Version)
25095 Codeforces 1956D: Nene and the Mex Operator
25094 Codeforces 1956C: Nene's Magical Matrix
25093 Codeforces 1956B: Nene and the Card Game
25092 Codeforces 1956A: Nene's Game
25091 Codeforces 1955H: The Most Reckless Defense
25090 Codeforces 1955G: GCD on a grid
25089 Codeforces 1955F: Unfair Game
25088 Codeforces 1955E: Long Inversions
25087 Codeforces 1955D: Inaccurate Subsequence Search
25086 Codeforces 1955C: Inhabitant of the Deep Sea
25085 Codeforces 1955B: Progressive Square
25084 Codeforces 1955A: Yogurt Sale
25083 Codeforces 1954F: Unique Strings
25082 Codeforces 1954E: Chain Reaction
25081 Codeforces 1954D: Colored Balls
25080 Codeforces 1954C: Long Multiplication
25079 Codeforces 1954B: Make It Ugly
25078 Codeforces 1954A: Painting the Ribbon
25077 Codeforces 1953A: Accuracy-Preserving Summation Algorithm
25076 Codeforces 1952J: Help, what does it mean to be "Based"
25075 Codeforces 1952I: Dark Matter
25074 Codeforces 1952H: Palindrome
25073 Codeforces 1952G: Mathematician Takeover
25072 Codeforces 1952F: Grid
25071 Codeforces 1952E: Sweep Line
25070 Codeforces 1952D: Are You a Procrastinator?
25069 Codeforces 1952C: They Have Fooled
25068 Codeforces 1952B: Is it stated?
25067 Codeforces 1952A: Are You a Robot, Again?
25066 Codeforces 1951I: Growing Trees
25065 Codeforces 1951H: Thanos Snap
25064 Codeforces 1951G: Clacking Balls
25063 Codeforces 1951F: Inversion Composition
25062 Codeforces 1951E: No Palindromes
25061 Codeforces 1951D: Buying Jewels
25060 Codeforces 1951C: Ticket Hoarding
25059 Codeforces 1951B: Battle Cows
25058 Codeforces 1951A: Dual Trigger
25057 Codeforces 1950G: Shuffling Songs
25056 Codeforces 1950F: 0, 1, 2, Tree!
25055 Codeforces 1950E: Nearly Shortest Repeating Substring
25054 Codeforces 1950D: Product of Binary Decimals
25053 Codeforces 1950C: Clock Conversion
25052 Codeforces 1950B: Upscaling
25051 Codeforces 1950A: Stair, Peak, or Neither?
25050 Codeforces 1949K: Make Triangle
25049 Codeforces 1949J: Amanda the Amoeba
25048 Codeforces 1949I: Disks
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