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)
4371 Codeforces 1017B: The Bits
4370 Codeforces 1017A: The Rank
4369 Codeforces 1016G: Appropriate Team
4368 Codeforces 1016F: Road Projects
4367 Codeforces 1016E: Rest In The Shades
4366 Codeforces 1016D: Vasya And The Matrix
4365 Codeforces 1016C: Vasya And The Mushrooms
4364 Codeforces 1016B: Segment Occurrences
4363 Codeforces 1016A: Death Note
4362 Codeforces 1015F: Bracket Substring
4361 Codeforces 1015E2: Stars Drawing (Hard Edition)
4360 Codeforces 1015E1: Stars Drawing (Easy Edition)
4359 Codeforces 1015D: Walking Between Houses
4358 Codeforces 1015C: Songs Compression
4357 Codeforces 1015B: Obtaining the String
4356 Codeforces 1015A: Points in Segments
4355 Codeforces 1013B: And
4354 Codeforces 1013A: Piles With Stones
4353 Codeforces 1012F: Passports
4352 Codeforces 1012E: Cycle sort
4351 Codeforces 1012D: AB-Strings
4350 Codeforces 1012C: Hills
4349 Codeforces 1012B: Chemical table
4348 Codeforces 1012A: Photo of The Sky
4347 Codeforces 1011B: Planning The Expedition
4346 Codeforces 1011A: Stages
4345 Codeforces 1010F: Tree
4344 Codeforces 1010E: Store
4343 Codeforces 1010D: Mars rover
4342 Codeforces 1010C: Border
4341 Codeforces 1010B: Rocket
4340 Codeforces 1010A: Fly
4339 Codeforces 1009G: Allowed Letters
4338 Codeforces 1009F: Dominant Indices
4337 Codeforces 1009E: Intercity Travelling
4336 Codeforces 1009D: Relatively Prime Graph
4335 Codeforces 1009C: Annoying Present
4334 Codeforces 1009B: Minimum Ternary String
4333 Codeforces 1009A: Game Shopping
4332 Codeforces 1008B: Turn the Rectangles
4331 Codeforces 1008A: Romaji
4330 Codeforces 1007E: Mini Metro
4329 Codeforces 1007D: Ants
4328 Codeforces 1007C: Guess two numbers
4327 Codeforces 1007B: Pave the Parallelepiped
4326 Codeforces 1007A: Reorder the Array
4325 Codeforces 1006F: Xor-Paths
4324 Codeforces 1006E: Military Problem
4323 Codeforces 1006D: Two Strings Swaps
4322 Codeforces 1006C: Three Parts of the Array
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