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)
10771 AtCoder AGC023: D. Go Home
10770 AtCoder AGC023: C. Painting Machines
10769 AtCoder AGC023: B. Find Symmetries
10768 AtCoder AGC023: A. Zero-Sum Ranges
10767 AtCoder AGC022: F. Checkers
10766 AtCoder AGC022: E. Median Replace
10765 AtCoder AGC022: D. Shopping
10764 AtCoder AGC022: C. Remainder Game
10763 AtCoder AGC022: B. GCD Sequence
10762 AtCoder AGC022: A. Diverse Word
10761 AtCoder AGC021: F. Trinity
10760 AtCoder AGC021: E. Ball Eat Chameleons
10759 AtCoder AGC021: D. Reversed LCS
10758 AtCoder AGC021: C. Tiling
10757 AtCoder AGC021: B. Holes
10756 AtCoder AGC021: A. Digit Sum 2
10755 AtCoder AGC020: F. Arcs on a Circle
10754 AtCoder AGC020: E. Encoding Subsets
10753 AtCoder AGC020: D. Min Max Repetition
10752 AtCoder AGC020: C. Median Sum
10751 AtCoder AGC020: B. Ice Rink Game
10750 AtCoder AGC020: A. Move and Win
10749 AtCoder AGC019: F. Yes or No
10748 AtCoder AGC019: E. Shuffle and Swap
10747 AtCoder AGC019: D. Shift and Flip
10746 AtCoder AGC019: C. Fountain Walk
10745 AtCoder AGC019: B. Reverse and Compare
10744 AtCoder AGC019: A. Ice Tea Store
10743 AtCoder AGC018: F. Two Trees
10742 AtCoder AGC018: E. Sightseeing Plan
10741 AtCoder AGC018: D. Tree and Hamilton Path
10740 AtCoder AGC018: C. Coins
10739 AtCoder AGC018: B. Sports Festival
10738 AtCoder AGC018: A. Getting Difference
10737 AtCoder AGC017: F. Zigzag
10736 AtCoder AGC017: E. Jigsaw
10735 AtCoder AGC017: D. Game on Tree
10734 AtCoder AGC017: C. Snuke and Spells
10733 AtCoder AGC017: B. Moderate Differences
10732 AtCoder AGC017: A. Biscuits
10731 AtCoder AGC016: F. Games on DAG
10730 AtCoder AGC016: E. Poor Turkeys
10729 AtCoder AGC016: D. XOR Replace
10728 AtCoder AGC016: C. +/- Rectangle
10727 AtCoder AGC016: B. Colorful Hats
10726 AtCoder AGC016: A. Shrinking
10725 AtCoder AGC015: F. Kenus the Ancient Greek
10724 AtCoder AGC015: E. Mr.Aoki Incubator
10723 AtCoder AGC015: D. A or...or B Problem
10722 AtCoder AGC015: C. Nuske vs Phantom Thnook
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