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)
6021 Codeforces 1351B: Square?
6020 Codeforces 1351A: A+B (Trial Problem)
6019 Codeforces 1350B: Orac and Models
6018 Codeforces 1350A: Orac and Factors
6017 Codeforces 1349F2: Slime and Sequences (Hard Version)
6016 Codeforces 1349F1: Slime and Sequences (Easy Version)
6015 Codeforces 1349E: Slime and Hats
6014 Codeforces 1349D: Slime and Biscuits
6013 Codeforces 1349C: Orac and Game of Life
6012 Codeforces 1349B: Orac and Medians
6011 Codeforces 1349A: Orac and LCM
6010 Codeforces 1348F: Phoenix and Memory
6009 Codeforces 1348E: Phoenix and Berries
6008 Codeforces 1348D: Phoenix and Science
6007 Codeforces 1348C: Phoenix and Distribution
6006 Codeforces 1348B: Phoenix and Beauty
6005 Codeforces 1348A: Phoenix and Balance
6004 Codeforces 1346I: Pac-Man 2.0
6003 Codeforces 1346H: Game with Segments
6002 Codeforces 1346G: Two IP Cameras
6001 Codeforces 1346F: Dune II: Battle For Arrakis
6000 Codeforces 1346E: Magic Tricks
5999 Codeforces 1346D: Constructing the Dungeon
5998 Codeforces 1346C: Spring Cleaning
5997 Codeforces 1346B: Boot Camp
5996 Codeforces 1346A: Color Revolution
5995 Codeforces 1345B: Card Constructions
5994 Codeforces 1345A: Puzzle Pieces
5993 Codeforces 1344F: Piet's Palette
5992 Codeforces 1344E: Train Tracks
5991 Codeforces 1344D: Résumé Review
5990 Codeforces 1344C: Quantifier Question
5989 Codeforces 1344B: Monopole Magnets
5988 Codeforces 1344A: Hilbert's Hotel
5987 Codeforces 1343F: Restore the Permutation by Sorted Segments
5986 Codeforces 1343E: Weights Distributing
5985 Codeforces 1343D: Constant Palindrome Sum
5984 Codeforces 1343C: Alternating Subsequence
5983 Codeforces 1343B: Balanced Array
5982 Codeforces 1343A: Candies
5981 Codeforces 1342F: Make It Ascending
5980 Codeforces 1342E: Placing Rooks
5979 Codeforces 1342D: Multiple Testcases
5978 Codeforces 1342C: Yet Another Counting Problem
5977 Codeforces 1342B: Binary Period
5976 Codeforces 1342A: Road To Zero
5975 Codeforces 1341B: Nastya and Door
5974 Codeforces 1341A: Nastya and Rice
5973 Codeforces 1340F: Nastya and CBS
5972 Codeforces 1340E: Nastya and Bees
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