Starlight: List of Problems

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Over 20,000 problems available. AMC 8/10/12 and AIME problems from 2010-2023; USAJMO/USAMO problems from 2002-2023 available. USACO problems from 2014 to 2023 (all divisions). Codeforces, AtCoder, DMOJ problems are added daily around 04:00 AM UTC, which may cause disruptions.

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ID Problem Name (click to add insights/hints, view summary of insights/hints and similar problems)
6121 Codeforces 1365D: Solve The Maze
6120 Codeforces 1365C: Rotation Matching
6119 Codeforces 1365B: Trouble Sort
6118 Codeforces 1365A: Matrix Game
6117 Codeforces 1364E: X-OR
6116 Codeforces 1364D: Ehab's Last Corollary
6115 Codeforces 1364C: Ehab and Prefix MEXs
6114 Codeforces 1364B: Most socially-distanced subsequence
6113 Codeforces 1364A: XXXXX
6112 Codeforces 1363F: Rotating Substrings
6111 Codeforces 1363E: Tree Shuffling
6110 Codeforces 1363D: Guess The Maximums
6109 Codeforces 1363C: Game On Leaves
6108 Codeforces 1363B: Subsequence Hate
6107 Codeforces 1363A: Odd Selection
6106 Codeforces 1362C: Johnny and Another Rating Drop
6105 Codeforces 1362B: Johnny and His Hobbies
6104 Codeforces 1362A: Johnny and Ancient Computer
6103 Codeforces 1361F: Johnny and New Toy
6102 Codeforces 1361E: James and the Chase
6101 Codeforces 1361D: Johnny and James
6100 Codeforces 1361C: Johnny and Megan's Necklace
6099 Codeforces 1361B: Johnny and Grandmaster
6098 Codeforces 1361A: Johnny and Contribution
6097 Codeforces 1360H: Binary Median
6096 Codeforces 1360G: A/B Matrix
6095 Codeforces 1360F: Spy-string
6094 Codeforces 1360E: Polygon
6093 Codeforces 1360D: Buying Shovels
6092 Codeforces 1360C: Similar Pairs
6091 Codeforces 1360B: Honest Coach
6090 Codeforces 1360A: Minimal Square
6089 Codeforces 1359F: RC Kaboom Show
6088 Codeforces 1359E: Modular Stability
6087 Codeforces 1359D: Yet Another Yet Another Task
6086 Codeforces 1359C: Mixing Water
6085 Codeforces 1359B: New Theatre Square
6084 Codeforces 1359A: Berland Poker
6083 Codeforces 1358F: Tasty Cookie
6082 Codeforces 1358E: Are You Fired?
6081 Codeforces 1358D: The Best Vacation
6080 Codeforces 1358C: Celex Update
6079 Codeforces 1358B: Maria Breaks the Self-isolation
6078 Codeforces 1358A: Park Lighting
6077 Codeforces 1357E2: Root of quantum Fourier transform
6076 Codeforces 1357E1: Power of quantum Fourier transform
6075 Codeforces 1357D5: Quantum Classification - Dataset 7
6074 Codeforces 1357D4: Quantum Classification - Dataset 6
6073 Codeforces 1357D3: Quantum Classification - Dataset 5
6072 Codeforces 1357D2: Quantum Classification - Dataset 4
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