Starlight: List of Problems

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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AMC 8: [year] AMC 8 Problem #, Ex: 2013 AMC 8 Problem 1
AMC 10: [year] AMC 10A Problem # OR [year] AMC 10B Problem #, Ex: 2015 AMC 10A Problem 16
AMC 12: [year] AMC 12A Problem # OR [year] AMC 12B Problem #, Ex: 2021 AMC 12B Problem 25
AIME: [year] AIME I Problem # OR [year] AIME II Problem #, Ex: 2013 AIME I Problem 8
USAJMO/USAMO: [year] USAJMO/USAMO Problem #, Ex: 2023 USAJMO Problem 1
Codeforces: Codeforces [contest id (e.g. 101)][problem id (e.g. A, B, C)]: [Codeforces problem name], Ex: Codeforces 1336F: Journey
AtCoder: AtCoder [contest id (e.g. ABC314, ARC164, ZONE2021)]: [problem id (A, B, C)]. [Problem name], Ex: AtCoder ZONE2021: E. Sneaking
DMOJ: DMOJ [contest name (if applicable)] [problem number (e.g. P1)] - [Problem name], Ex: DMOJ Yet Another Contest 3 P1 - Shell Swap Scam
USACO: [year] [contest month (e.g. January, US Open)], [division (e.g. Gold)]: [Problem name], Ex: USACO 2023 US Open Contest, Bronze: Rotate and Shift

ID	Problem Name (click to add insights/hints, view summary of insights/hints and similar problems)
19301	DMOJ TSOC '15 Contest 2 #4 - Dungeon Crawling
19300	DMOJ TSOC '15 Contest 2 #3 - Funny Anagrams
19299	DMOJ TSOC '15 Contest 2 #2 - Diamonds
19298	DMOJ TSOC '15 Contest 2 #1 - The Code
19297	DMOJ TSOC '15 Contest 1 #5 - Giant Ants
19296	DMOJ TSOC '15 Contest 1 #4 - Restaurant Of Secrets
19295	DMOJ TSOC '15 Contest 1 #3 - Elevators
19294	DMOJ TSOC '15 Contest 1 #2 - Special Store
19293	DMOJ TSOC '15 Contest 1 #1 - Molecular or Non-Molecular?
19292	DMOJ Tropical Bananas
19291	DMOJ Trick-or-Treat
19290	DMOJ Tree Tasks
19289	DMOJ Tree Paths
19288	DMOJ Mine and Tree
19287	DMOJ Tree Cutting
19286	DMOJ Is it a Tree?
19285	DMOJ Traffic Lights
19284	DMOJ Towers
19283	DMOJ Total Destruction
19282	DMOJ Topium
19281	DMOJ Tootsie Rolls
19280	DMOJ Still Too Simple
19279	DMOJ Too Simple
19278	DMOJ Temple Construction
19277	DMOJ An Extraordinarily Coordinated Christmas
19276	DMOJ TLE 2018-19 P6 - The Final Test
19275	DMOJ TLE 2018-19 P5 - Pure Functional Programming
19274	DMOJ TLE 2018-19 P4 - Fax McClad and the Melee
19273	DMOJ TLE 2018-19 P3 - Feedback Survey
19272	DMOJ TLE 2018-19 P2 - Willson and Trivial Problem
19271	DMOJ TLE 2018-19 P1 - Hello, World!
19270	DMOJ TLE '17 Contest 8 P6 - Willson and Nesting Season
19269	DMOJ TLE '17 Contest 8 P5 - Battle Plan 2
19268	DMOJ TLE '17 Contest 8 P4 - Gamma Waves
19267	DMOJ TLE '17 Contest 8 P3 - Curious Numbers
19266	DMOJ TLE '17 Contest 8 P2 - Ship Defense
19265	DMOJ TLE '17 Contest 8 P1 - Artificial Intelligence
19264	DMOJ TLE '17 Contest 7 P6 - Base Bombing
19263	DMOJ TLE '17 Contest 7 P5 - Willson and Mating
19262	DMOJ TLE '17 Contest 7 P4 - Database
19261	DMOJ TLE '17 Contest 7 P3 - Countless Calculator Computations
19260	DMOJ TLE '17 Contest 7 P2 - Airport Hopping
19259	DMOJ TLE '17 Contest 7 P1 - Stargazing
19258	DMOJ TLE '17 Contest 6 P6 - 6 Friends
19257	DMOJ TLE '17 Contest 6 P5 - Speedrunning
19256	DMOJ TLE '17 Contest 6 P4 - Willson and Travelling
19255	DMOJ TLE '17 Contest 6 P3 - Spencer and Contest
19254	DMOJ TLE '17 Contest 6 P2 - Mr. More-than-perfect
19253	DMOJ TLE '17 Contest 6 P1 - Molecules
19252	DMOJ TLE '17 Contest 5 P6 - Circuits

Problem Name (click to add insights/hints, view summary of insights/hints and similar problems)

19301

DMOJ TSOC '15 Contest 2 #4 - Dungeon Crawling

19300

DMOJ TSOC '15 Contest 2 #3 - Funny Anagrams

19299

DMOJ TSOC '15 Contest 2 #2 - Diamonds

19298

DMOJ TSOC '15 Contest 2 #1 - The Code

19297

DMOJ TSOC '15 Contest 1 #5 - Giant Ants

19296