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)
24859 DMOJ HHPC1 P1 - Yielding the Longest Substring
24858 DMOJ Yet Another Contest 8 P4 - Fluke 2
24857 DMOJ Yet Another Contest 8 P6 - Into the Woods
24856 DMOJ Yet Another Contest 8 P3 - Herobrine
24855 DMOJ HHPC1 P2 - Yuniformity Challenge
24854 DMOJ HHPC1 P5 - Yunity Grouping Objects
24853 DMOJ HHPC1 P3 - Yonder Ridge
24852 DMOJ HHPC1 P6 - Yarn Street's Strategic Shopping
24851 DMOJ HHPC1 P4 - Yet Another A+B Problem
24850 DMOJ Yet Another Contest 8 P2 - No More Modern Art
24849 DMOJ Yet Another Contest 8 P1 - Permutation Sorting
24848 DMOJ Yet Another Contest 8 P5 - Hidden Tree
24808 DMOJ COCI '23 Contest 3 #5 Sluńćajna Cesta
24807 DMOJ COCI '23 Contest 3 #4 Restorani
24806 DMOJ COCI '23 Contest 3 #3 Milano C.le
24805 DMOJ COCI '23 Contest 3 #2 Vrsar
24804 DMOJ COCI '23 Contest 3 #1 Eurokod
24803 DMOJ Mock CCC '24 Contest 1 S2 - Owen the Toucan
24802 DMOJ Mock CCC '24 Contest 1 S5 - Mock CCC 2025
24801 DMOJ Mock CCC '24 Contest 1 J3 - RGB Words
24800 DMOJ Mock CCC '24 Contest 1 J5 - Mathland
24799 DMOJ Mock CCC '24 Contest 1 S4 - Tommy's Lemonade Stand
24798 DMOJ Mock CCC '24 Contest 1 S3 - Optimal Split Point
24797 DMOJ Mock CCC '24 Contest 1 J4/S1 - Magical Magnetic Marbles
24796 DMOJ Mock CCC '24 Contest 1 J1 - Lemon Bathtub
24795 DMOJ Yet Another Contest 3 P3 - Topography
24794 DMOJ Mock CCC '24 Contest 1 J2 - Simple Elo Rating System
24759 DMOJ Triangles
24758 DMOJ WOSS Dual Olympiad 2023 S2: Geese Attack
24757 DMOJ WOSS Dual Olympiad 2023 Team Round P3: Choosing Edges
24756 DMOJ WOSS Dual Olympiad 2023 J2: 3 Numbers
24755 DMOJ WOSS Dual Olympiad 2023 J1: Minimum Price
24754 DMOJ Amplitude Hackathon '23 Practice Problem 5 - What is Spenser's Last Name?
24753 DMOJ WOSS Dual Olympiad 2023 J3/S1: Moving Sand
24752 DMOJ COCI '23 Contest 2 #5 Zatopljenje
24751 DMOJ COCI '23 Contest 2 #4 Kuglice
24750 DMOJ COCI '23 Contest 2 #3 Dizalo
24749 DMOJ COCI '23 Contest 2 #2 Pingvin
24748 DMOJ COCI '23 Contest 2 #1 Pahuljice
24747 DMOJ Amplitude Hackathon '23 Practice Problem 4 - Gigatron Autoscaling
24746 DMOJ Amplitude Hackathon '23 Practice Problem 3 - Demo Day Demos
24745 DMOJ Amplitude Hackathon '23 Practice Problem 2 - Go Amplitude!
24744 DMOJ Amplitude Hackathon '23 Practice Problem 1 - Gigatron EPS Modulo 998244353
24743 DMOJ X Diagonal
24742 DMOJ UACC 1 P4 - Converging Streams
24741 DMOJ WOSS Dual Olympiad 2023 Team Round P2: Holding Eggnog
24740 DMOJ WOSS Dual Olympiad 2023 Team Round P1: Combining Candy Canes
24739 DMOJ WOSS Dual Olympiad 2023 S3: Flying
24738 DMOJ Amplitude Hackathon '23 Problem 5 - Partition Assignment
24737 DMOJ DMOPC '23 Contest 1 P4 - Wandering Walk
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