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)
2071 Codeforces 479C: Exams
2070 Codeforces 479B: Towers
2069 Codeforces 479A: Expression
2068 Codeforces 478E: Wavy numbers
2067 Codeforces 478D: Red-Green Towers
2066 Codeforces 478C: Table Decorations
2065 Codeforces 478B: Random Teams
2064 Codeforces 478A: Initial Bet
2063 Codeforces 477E: Dreamoon and Notepad
2062 Codeforces 477D: Dreamoon and Binary
2061 Codeforces 476E: Dreamoon and Strings
2060 Codeforces 476D: Dreamoon and Sets
2059 Codeforces 476C: Dreamoon and Sums
2058 Codeforces 476B: Dreamoon and WiFi
2057 Codeforces 476A: Dreamoon and Stairs
2056 Codeforces 475F: Meta-universe
2055 Codeforces 475E: Strongly Connected City 2
2054 Codeforces 475D: CGCDSSQ
2053 Codeforces 475C: Kamal-ol-molk's Painting
2052 Codeforces 475B: Strongly Connected City
2051 Codeforces 475A: Bayan Bus
2050 Codeforces 474F: Ant colony
2049 Codeforces 474E: Pillars
2048 Codeforces 474D: Flowers
2047 Codeforces 474C: Captain Marmot
2046 Codeforces 474B: Worms
2045 Codeforces 474A: Keyboard
2044 Codeforces 472G: Design Tutorial: Increase the Constraints
2043 Codeforces 472F: Design Tutorial: Change the Goal
2042 Codeforces 472E: Design Tutorial: Learn from a Game
2041 Codeforces 472D: Design Tutorial: Inverse the Problem
2040 Codeforces 472C: Design Tutorial: Make It Nondeterministic
2039 Codeforces 472B: Design Tutorial: Learn from Life
2038 Codeforces 472A: Design Tutorial: Learn from Math
2037 Codeforces 471E: MUH and Lots and Lots of Segments
2036 Codeforces 471D: MUH and Cube Walls
2035 Codeforces 471C: MUH and House of Cards
2034 Codeforces 471B: MUH and Important Things
2033 Codeforces 471A: MUH and Sticks
2032 Codeforces 470H: Array Sorting
2031 Codeforces 470G: Hamming Distance
2030 Codeforces 470F: Pairwise Sums
2029 Codeforces 470E: Chessboard
2028 Codeforces 470D: Caesar Cipher
2027 Codeforces 470C: Eval
2026 Codeforces 470B: Hexakosioihexekontahexaphobia
2025 Codeforces 470A: Crystal Ball Sequence
2024 Codeforces 469B: Chat Online
2023 Codeforces 469A: I Wanna Be the Guy
2022 Codeforces 468E: Permanent
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