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)
11021 AtCoder AHC007: A. Online MST
11020 AtCoder AHC006: A. Food Delivery
11019 AtCoder AHC005: A. Patrolling
11018 AtCoder AHC004: A. Alien's Genome Assembly
11017 AtCoder AHC003: A. Shortest Path Queries
11016 AtCoder AHC002: A. Walking on Tiles
11015 AtCoder AHC001: A. AtCoder Ad
11014 AtCoder AGC064: F. No Permutations
11013 AtCoder AGC064: E. Cross Sum Construction
11012 AtCoder AGC064: D. Red and Blue Chips
11011 AtCoder AGC064: C. Erase and Divide Game
11010 AtCoder AGC064: B. Red and Blue Spanning Tree
11009 AtCoder AGC064: A. i i's
11008 AtCoder AGC063: F. Simultaneous Floor
11007 AtCoder AGC063: E. Child to Parent
11006 AtCoder AGC063: D. Many CRT
11005 AtCoder AGC063: C. Add Mod Operations
11004 AtCoder AGC063: B. Insert 1, 2, 3, ...
11003 AtCoder AGC063: A. Mex Game
11002 AtCoder AGC062: F. Preserve Distinct
11001 AtCoder AGC062: E. Overlap Binary Tree
11000 AtCoder AGC062: D. Walk Around Neighborhood
10999 AtCoder AGC062: C. Mex of Subset Sum
10998 AtCoder AGC062: B. Split and Insert
10997 AtCoder AGC062: A. Right Side Character
10996 AtCoder AGC061: F. Perfect Strings
10995 AtCoder AGC061: E. Increment or XOR
10994 AtCoder AGC061: D. Almost Multiplication Table
10993 AtCoder AGC061: C. First Come First Serve
10992 AtCoder AGC061: B. Summation By Construction
10991 AtCoder AGC061: A. Long Shuffle
10990 AtCoder AGC060: F. Spanning Trees of Interval Graph
10989 AtCoder AGC060: E. Number of Cycles
10988 AtCoder AGC060: D. Same Descent Set
10987 AtCoder AGC060: C. Large Heap
10986 AtCoder AGC060: B. Unique XOR Path
10985 AtCoder AGC060: A. No Majority
10984 AtCoder AGC059: F. LIDS
10983 AtCoder AGC059: E. Grid 3-coloring
10982 AtCoder AGC059: D. Distinct Elements on Subsegments
10981 AtCoder AGC059: C. Guessing Permutation for as Long as Possible
10980 AtCoder AGC059: B. Arrange Your Balls
10979 AtCoder AGC059: A. My Last ABC Problem
10978 AtCoder AGC058: F. Authentic Tree DP
10977 AtCoder AGC058: E. Nearer Permutation
10976 AtCoder AGC058: D. Yet Another ABC String
10975 AtCoder AGC058: C. Planar Tree
10974 AtCoder AGC058: B. Adjacent Chmax
10973 AtCoder AGC058: A. Make it Zigzag
10972 AtCoder AGC057: F. Reflection
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