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)
6671 Codeforces 1475A: Odd Divisor
6670 Codeforces 1474F: 1 2 3 4 ...
6669 Codeforces 1474E: What Is It?
6668 Codeforces 1474D: Cleaning
6667 Codeforces 1474C: Array Destruction
6666 Codeforces 1474B: Different Divisors
6665 Codeforces 1474A: Puzzle From the Future
6664 Codeforces 1473G: Tiles
6663 Codeforces 1473F: Strange Set
6662 Codeforces 1473E: Minimum Path
6661 Codeforces 1473D: Program
6660 Codeforces 1473C: No More Inversions
6659 Codeforces 1473B: String LCM
6658 Codeforces 1473A: Replacing Elements
6657 Codeforces 1472G: Moving to the Capital
6656 Codeforces 1472F: New Year's Puzzle
6655 Codeforces 1472E: Correct Placement
6654 Codeforces 1472D: Even-Odd Game
6653 Codeforces 1472C: Long Jumps
6652 Codeforces 1472B: Fair Division
6651 Codeforces 1472A: Cards for Friends
6650 Codeforces 1471B: Strange List
6649 Codeforces 1471A: Strange Partition
6648 Codeforces 1470F: Strange Covering
6647 Codeforces 1470E: Strange Permutation
6646 Codeforces 1470D: Strange Housing
6645 Codeforces 1470C: Strange Shuffle
6644 Codeforces 1470B: Strange Definition
6643 Codeforces 1470A: Strange Birthday Party
6642 Codeforces 1469F: Power Sockets
6641 Codeforces 1469E: A Bit Similar
6640 Codeforces 1469D: Ceil Divisions
6639 Codeforces 1469C: Building a Fence
6638 Codeforces 1469B: Red and Blue
6637 Codeforces 1469A: Regular Bracket Sequence
6636 Codeforces 1468N: Waste Sorting
6635 Codeforces 1468M: Similar Sets
6634 Codeforces 1468L: Prime Divisors Selection
6633 Codeforces 1468K: The Robot
6632 Codeforces 1468J: Road Reform
6631 Codeforces 1468I: Plane Tiling
6630 Codeforces 1468H: K and Medians
6629 Codeforces 1468G: Hobbits
6628 Codeforces 1468F: Full Turn
6627 Codeforces 1468E: Four Segments
6626 Codeforces 1468D: Firecrackers
6625 Codeforces 1468C: Berpizza
6624 Codeforces 1468B: Bakery
6623 Codeforces 1468A: LaIS
6622 Codeforces 1467E: Distinctive Roots in a Tree
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