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)
24171 2023 AMC 10A Problem 20
24170 2023 AMC 10A Problem 19
24169 2023 AMC 10A Problem 18
24168 2023 AMC 10A Problem 17
24167 2023 AMC 10A Problem 16
24166 2023 AMC 10A Problem 15
24165 2023 AMC 10A Problem 14
24164 2023 AMC 10A Problem 13
24163 2023 AMC 10A Problem 12
24162 2023 AMC 10A Problem 11
24161 2023 AMC 10A Problem 10
24160 2023 AMC 10A Problem 9
24159 2023 AMC 10A Problem 8
24158 2023 AMC 10A Problem 7
24157 2023 AMC 10A Problem 6
24156 2023 AMC 10A Problem 5
24155 2023 AMC 10A Problem 4
24154 2023 AMC 10A Problem 3
24153 2023 AMC 10A Problem 2
24152 2023 AMC 10A Problem 1
24151 AtCoder ABC326: G. Unlock Achievement
24150 AtCoder ABC326: F. Robot Rotation
24149 AtCoder ABC326: E. Revenge of "The Salary of AtCoder Inc."
24148 AtCoder ABC326: D. ABC Puzzle
24147 AtCoder ABC326: C. Peak
24146 AtCoder ABC326: B. 326-like Numbers
24145 AtCoder ABC326: A. 2UP3DOWN
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
24135 DMOJ Waterloo 2023 Fall E - Loose Goose
24134 DMOJ Waterloo 2023 Fall D - Reptilian Communism
24133 DMOJ Waterloo 2023 Fall C - Whitewater Rafting
24132 DMOJ Waterloo 2023 Fall B - Orb Tent
24131 DMOJ Waterloo 2023 Fall A - Black Frame
24130 DMOJ NOI '17 P4 - Game
24129 AtCoder TTPC2023: P. Bridge Elimination
24128 AtCoder TTPC2023: O. 2D Parentheses
24127 AtCoder TTPC2023: N. Bracket Sequestion
24126 AtCoder TTPC2023: M. Sum is Integer
24125 AtCoder TTPC2023: L. Next TTPC 3
24124 AtCoder TTPC2023: K. Dense Planting
24123 AtCoder TTPC2023: J. Set Construction
24122 AtCoder TTPC2023: I. T Tile Placement Counting
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