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)
3871 Codeforces 910C: Minimum Sum
3870 Codeforces 910B: Door Frames
3869 Codeforces 910A: The Way to Home
3868 Codeforces 909F: AND-permutations
3867 Codeforces 909E: Coprocessor
3866 Codeforces 909D: Colorful Points
3865 Codeforces 909C: Python Indentation
3864 Codeforces 909B: Segments
3863 Codeforces 909A: Generate Login
3862 Codeforces 908H: New Year and Boolean Bridges
3861 Codeforces 908G: New Year and Original Order
3860 Codeforces 908F: New Year and Rainbow Roads
3859 Codeforces 908E: New Year and Entity Enumeration
3858 Codeforces 908D: New Year and Arbitrary Arrangement
3857 Codeforces 908C: New Year and Curling
3856 Codeforces 908B: New Year and Buggy Bot
3855 Codeforces 908A: New Year and Counting Cards
3854 Codeforces 907B: Tic-Tac-Toe
3853 Codeforces 907A: Masha and Bears
3852 Codeforces 906E: Reverses
3851 Codeforces 906D: Power Tower
3850 Codeforces 906C: Party
3849 Codeforces 906B: Seating of Students
3848 Codeforces 906A: Shockers
3847 Codeforces 903G: Yet Another Maxflow Problem
3846 Codeforces 903F: Clear The Matrix
3845 Codeforces 903E: Swapping Characters
3844 Codeforces 903D: Almost Difference
3843 Codeforces 903C: Boxes Packing
3842 Codeforces 903B: The Modcrab
3841 Codeforces 903A: Hungry Student Problem
3840 Codeforces 902B: Coloring a Tree
3839 Codeforces 902A: Visiting a Friend
3838 Codeforces 901E: Cyclic Cipher
3837 Codeforces 901D: Weighting a Tree
3836 Codeforces 901C: Bipartite Segments
3835 Codeforces 901B: GCD of Polynomials
3834 Codeforces 901A: Hashing Trees
3833 Codeforces 900E: Maximum Questions
3832 Codeforces 900D: Unusual Sequences
3831 Codeforces 900C: Remove Extra One
3830 Codeforces 900B: Position in Fraction
3829 Codeforces 900A: Find Extra One
3828 Codeforces 899F: Letters Removing
3827 Codeforces 899E: Segments Removal
3826 Codeforces 899D: Shovel Sale
3825 Codeforces 899C: Dividing the numbers
3824 Codeforces 899B: Months and Years
3823 Codeforces 899A: Splitting in Teams
3822 Codeforces 898F: Restoring the Expression
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