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)
5971 Codeforces 1340D: Nastya and Time Machine
5970 Codeforces 1340C: Nastya and Unexpected Guest
5969 Codeforces 1340B: Nastya and Scoreboard
5968 Codeforces 1340A: Nastya and Strange Generator
5967 Codeforces 1339B: Sorted Adjacent Differences
5966 Codeforces 1339A: Filling Diamonds
5965 Codeforces 1338E: JYPnation
5964 Codeforces 1338D: Nested Rubber Bands
5963 Codeforces 1338C: Perfect Triples
5962 Codeforces 1338B: Edge Weight Assignment
5961 Codeforces 1338A: Powered Addition
5960 Codeforces 1337B: Kana and Dragon Quest game
5959 Codeforces 1337A: Ichihime and Triangle
5958 Codeforces 1336F: Journey
5957 Codeforces 1336E2: Chiori and Doll Picking (hard version)
5956 Codeforces 1336E1: Chiori and Doll Picking (easy version)
5955 Codeforces 1336D: Yui and Mahjong Set
5954 Codeforces 1336C: Kaavi and Magic Spell
5953 Codeforces 1336B: Xenia and Colorful Gems
5952 Codeforces 1336A: Linova and Kingdom
5951 Codeforces 1335F: Robots on a Grid
5950 Codeforces 1335E2: Three Blocks Palindrome (hard version)
5949 Codeforces 1335E1: Three Blocks Palindrome (easy version)
5948 Codeforces 1335D: Anti-Sudoku
5947 Codeforces 1335C: Two Teams Composing
5946 Codeforces 1335B: Construct the String
5945 Codeforces 1335A: Candies and Two Sisters
5944 Codeforces 1334G: Substring Search
5943 Codeforces 1334F: Strange Function
5942 Codeforces 1334E: Divisor Paths
5941 Codeforces 1334D: Minimum Euler Cycle
5940 Codeforces 1334C: Circle of Monsters
5939 Codeforces 1334B: Middle Class
5938 Codeforces 1334A: Level Statistics
5937 Codeforces 1333F: Kate and imperfection
5936 Codeforces 1333E: Road to 1600
5935 Codeforces 1333D: Challenges in school №41
5934 Codeforces 1333C: Eugene and an array
5933 Codeforces 1333B: Kind Anton
5932 Codeforces 1333A: Little Artem
5931 Codeforces 1332G: No Monotone Triples
5930 Codeforces 1332F: Independent Set
5929 Codeforces 1332E: Height All the Same
5928 Codeforces 1332D: Walk on Matrix
5927 Codeforces 1332C: K-Complete Word
5926 Codeforces 1332B: Composite Coloring
5925 Codeforces 1332A: Exercising Walk
5924 Codeforces 1331H: It's showtime
5923 Codeforces 1331G: Lingua Romana
5922 Codeforces 1331F: Elementary!
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