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)
24144 Codeforces 1890B: Qingshan Loves Strings
24143 Codeforces 1890A: Doremy's Paint 3
24142 Codeforces 1889F: Doremy's Average Tree
24141 Codeforces 1889E: Doremy's Swapping Trees
24140 Codeforces 1889D: Game of Stacks
24139 Codeforces 1889C2: Doremy's Drying Plan (Hard Version)
24138 Codeforces 1889C1: Doremy's Drying Plan (Easy Version)
24137 Codeforces 1889B: Doremy's Connecting Plan
24136 Codeforces 1889A: Qingshan Loves Strings 2
24075 Codeforces 1887F: Minimum Segments
24074 Codeforces 1887E: Good Colorings
24073 Codeforces 1887D: Split
24072 Codeforces 1887C: Minimum Array
24071 Codeforces 1887B: Time Travel
24070 Codeforces 1886F: Diamond Theft
24069 Codeforces 1886E: I Wanna be the Team Leader
24068 Codeforces 1886D: Monocarp and the Set
24067 Codeforces 1886C: Decreasing String
24066 Codeforces 1886B: Fear of the Dark
24065 Codeforces 1886A: Sum of Three
24064 Codeforces 1884E: Hard Design
24063 Codeforces 1884D: Counting Rhyme
24062 Codeforces 1884C: Medium Design
24061 Codeforces 1884B: Haunted House
24060 Codeforces 1884A: Simple Design
24059 Codeforces 1883G2: Dances (Hard Version)
24058 Codeforces 1883G1: Dances (Easy version)
24057 Codeforces 1883F: You Are So Beautiful
24056 Codeforces 1883E: Look Back
24055 Codeforces 1883D: In Love
24054 Codeforces 1883C: Raspberries
24053 Codeforces 1883B: Chemistry
24052 Codeforces 1883A: Morning
24051 Codeforces 1881G: Anya and the Mysterious String
24050 Codeforces 1881F: Minimum Maximum Distance
24049 Codeforces 1881E: Block Sequence
24048 Codeforces 1881D: Divide and Equalize
24047 Codeforces 1881C: Perfect Square
24046 Codeforces 1881B: Three Threadlets
24045 Codeforces 1881A: Don't Try to Count
24044 Codeforces 1877C: Joyboard
24043 Codeforces 1877A: Goals of Victory
24042 Codeforces 1876G: Clubstep
24041 Codeforces 1876F: Indefinite Clownfish
24040 Codeforces 1876E: Ball-Stackable
24039 Codeforces 1876D: Lexichromatography
24038 Codeforces 1876C: Autosynthesis
24037 Codeforces 1876B: Effects of Anti Pimples
24036 Codeforces 1876A: Helmets in Night Light
24009 Codeforces 1882E2: Two Permutations (Hard Version)
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