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)
14021 AtCoder PAST202209-OPEN: J. Sprinkler
14020 AtCoder PAST202209-OPEN: I. Buying Apple Everyday
14019 AtCoder PAST202209-OPEN: H. Three Types of Coins
14018 AtCoder PAST202209-OPEN: G. Wildcards
14017 AtCoder PAST202209-OPEN: F. Pharmacist
14016 AtCoder PAST202209-OPEN: E. Hitting Stick Game
14015 AtCoder PAST202209-OPEN: D. Marking
14014 AtCoder PAST202209-OPEN: C. Biased Dice
14013 AtCoder PAST202209-OPEN: B. Credits
14012 AtCoder PAST202209-OPEN: A. Trafic Light
14011 AtCoder PAST202206-OPEN: O. Area Queries
14010 AtCoder PAST202206-OPEN: N. Building Plan
14009 AtCoder PAST202206-OPEN: M. Reversal
14008 AtCoder PAST202206-OPEN: L. Almost LCS
14007 AtCoder PAST202206-OPEN: K. Subsequence
14006 AtCoder PAST202206-OPEN: J. Holidays
14005 AtCoder PAST202206-OPEN: I. Clean up
14004 AtCoder PAST202206-OPEN: H. Two Knapsacks
14003 AtCoder PAST202206-OPEN: G. Is it a tree?
14002 AtCoder PAST202206-OPEN: F. Gun Shooting
14001 AtCoder PAST202206-OPEN: E. Strange Sequence
14000 AtCoder PAST202206-OPEN: D. Similar Strings
13999 AtCoder PAST202206-OPEN: C. Order
13998 AtCoder PAST202206-OPEN: B. Two Letters
13997 AtCoder PAST202206-OPEN: A. The Tortoise and the Hare
13996 AtCoder PAST202203-OPEN: O. 3-Permutation
13995 AtCoder PAST202203-OPEN: N. 40B of calculations
13994 AtCoder PAST202203-OPEN: M. Ranking
13993 AtCoder PAST202203-OPEN: L. N mod M
13992 AtCoder PAST202203-OPEN: K. Planning
13991 AtCoder PAST202203-OPEN: J. Expected Range
13990 AtCoder PAST202203-OPEN: I. Symmetric Transformation
13989 AtCoder PAST202203-OPEN: H. Connected Components
13988 AtCoder PAST202203-OPEN: G. Equations
13987 AtCoder PAST202203-OPEN: F. Coloring map
13986 AtCoder PAST202203-OPEN: E. Only 2 kinds
13985 AtCoder PAST202203-OPEN: D. High Score
13984 AtCoder PAST202203-OPEN: C. Go Further
13983 AtCoder PAST202203-OPEN: B. Flowers
13982 AtCoder PAST202203-OPEN: A. Three cards
13981 AtCoder PAST202112-OPEN: O. Pair Score
13980 AtCoder PAST202112-OPEN: N. Intersection
13979 AtCoder PAST202112-OPEN: M. Deadnames
13978 AtCoder PAST202112-OPEN: L. Honest students
13977 AtCoder PAST202112-OPEN: K. Gas Station
13976 AtCoder PAST202112-OPEN: J. Rotate and Reverse
13975 AtCoder PAST202112-OPEN: I. Direct Elevator
13974 AtCoder PAST202112-OPEN: H. Longest Non-common Subsequence
13973 AtCoder PAST202112-OPEN: G. Connectivity
13972 AtCoder PAST202112-OPEN: F. Like As Shogi
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