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)
8121 Codeforces 1738H: Palindrome Addicts
8120 Codeforces 1738G: Anti-Increasing Addicts
8119 Codeforces 1738F: Connectivity Addicts
8118 Codeforces 1738E: Balance Addicts
8117 Codeforces 1738D: Permutation Addicts
8116 Codeforces 1738C: Even Number Addicts
8115 Codeforces 1738B: Prefix Sum Addicts
8114 Codeforces 1738A: Glory Addicts
8113 Codeforces 1737G: Ela Takes Dancing Class
8112 Codeforces 1737F: Ela and Prime GCD
8111 Codeforces 1737E: Ela Goes Hiking
8110 Codeforces 1737D: Ela and the Wiring Wizard
8109 Codeforces 1737C: Ela and Crickets
8108 Codeforces 1737B: Ela's Fitness and the Luxury Number
8107 Codeforces 1737A: Ela Sorting Books
8106 Codeforces 1736E: Swap and Take
8105 Codeforces 1736D: Equal Binary Subsequences
8104 Codeforces 1736C2: Good Subarrays (Hard Version)
8103 Codeforces 1736C1: Good Subarrays (Easy Version)
8102 Codeforces 1736B: Playing with GCD
8101 Codeforces 1736A: Make A Equal to B
8100 Codeforces 1735F: Pebbles and Beads
8099 Codeforces 1735E: House Planning
8098 Codeforces 1735D: Meta-set
8097 Codeforces 1735C: Phase Shift
8096 Codeforces 1735B: Tea with Tangerines
8095 Codeforces 1735A: Working Week
8094 Codeforces 1734F: Zeros and Ones
8093 Codeforces 1734E: Rectangular Congruence
8092 Codeforces 1734D: Slime Escape
8091 Codeforces 1734C: Removing Smallest Multiples
8090 Codeforces 1734B: Bright, Nice, Brilliant
8089 Codeforces 1734A: Select Three Sticks
8088 Codeforces 1733E: Conveyor
8087 Codeforces 1733D2: Zero-One (Hard Version)
8086 Codeforces 1733D1: Zero-One (Easy Version)
8085 Codeforces 1733C: Parity Shuffle Sorting
8084 Codeforces 1733B: Rule of League
8083 Codeforces 1733A: Consecutive Sum
8082 Codeforces 1732E: Location
8081 Codeforces 1732D2: Balance (Hard version)
8080 Codeforces 1732D1: Balance (Easy version)
8079 Codeforces 1732C2: Sheikh (Hard Version)
8078 Codeforces 1732C1: Sheikh (Easy version)
8077 Codeforces 1732B: Ugu
8076 Codeforces 1732A: Bestie
8075 Codeforces 1731F: Function Sum
8074 Codeforces 1731E: Graph Cost
8073 Codeforces 1731D: Valiant's New Map
8072 Codeforces 1731C: Even Subarrays
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