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)
16651	DMOJ COCI '22 Contest 5 #2 Diskurs
16650	DMOJ COCI '22 Contest 5 #1 Kalendar
16649	DMOJ COCI '22 Contest 4 #5 Vrsta
16648	DMOJ COCI '22 Contest 4 #4 Mreža
16647	DMOJ COCI '22 Contest 4 #3 Bojanje
16646	DMOJ COCI '22 Contest 4 #2 Zrinka
16645	DMOJ COCI '22 Contest 4 #1 7Krokods
16644	DMOJ COCI '22 Contest 3 #5 Skrivača
16643	DMOJ COCI '22 Contest 3 #4 Bomboni
16642	DMOJ COCI '22 Contest 3 #3 Baltazar
16641	DMOJ COCI '22 Contest 3 #2 Dirigent
16640	DMOJ COCI '22 Contest 3 #1 Estimathon
16639	DMOJ COCI '22 Contest 2 #5 Kruhologija
16638	DMOJ COCI '22 Contest 2 #4 Prijateljice
16637	DMOJ COCI '22 Contest 2 #3 Lampice
16636	DMOJ COCI '22 Contest 2 #2 Ekspert
16635	DMOJ COCI '22 Contest 2 #1 Tramvaji
16634	DMOJ COCI '22 Contest 1 #5 Neboderi
16633	DMOJ COCI '22 Contest 1 #4 Iksevi
16632	DMOJ COCI '22 Contest 1 #3 Berilij
16631	DMOJ COCI '22 Contest 1 #2 Čokolade
16630	DMOJ COCI '22 Contest 1 #1 Desni Klik
16629	DMOJ COCI '21 Contest 6 #5 Superozicija
16628	DMOJ COCI '21 Contest 6 #4 Palindromi
16627	DMOJ COCI '21 Contest 6 #3 Naboj
16626	DMOJ COCI '21 Contest 6 #2 Zemljište
16625	DMOJ COCI '21 Contest 6 #1 Med
16624	DMOJ COCI '21 Contest 5 #5 Usmjeravanje
16623	DMOJ COCI '21 Contest 5 #4 Radio
16622	DMOJ COCI '21 Contest 5 #3 Fliper
16621	DMOJ COCI '21 Contest 5 #2 Dijamant
16620	DMOJ COCI '21 Contest 5 #1 Kemija
16619	DMOJ COCI '21 Contest 4 #5 Šarenlist
16618	DMOJ COCI '21 Contest 4 #4 Parkovi
16617	DMOJ COCI '21 Contest 4 #3 Izbori
16616	DMOJ COCI '21 Contest 4 #2 Autobus
16615	DMOJ COCI '21 Contest 4 #1 Autići
16614	DMOJ COCI '21 Contest 3 #5 Kućice
16613	DMOJ COCI '21 Contest 3 #4 Ekoeko
16612	DMOJ COCI '21 Contest 3 #3 Akcija
16611	DMOJ COCI '21 Contest 3 #2 Cijanobakterije
16610	DMOJ COCI '21 Contest 3 #1 Lampice
16609	DMOJ COCI '21 Contest 2 #5 Osumnjičeni
16608	DMOJ COCI '21 Contest 2 #4 Magneti
16607	DMOJ COCI '21 Contest 2 #3 Hiperkocka
16606	DMOJ COCI '21 Contest 2 #2 Kutije
16605	DMOJ COCI '21 Contest 2 #1 Kaučuk
16604	DMOJ COCI '21 Contest 1 #5 Volontiranje
16603	DMOJ COCI '21 Contest 1 #4 Set
16602	DMOJ COCI '21 Contest 1 #3 Logičari

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

16651

DMOJ COCI '22 Contest 5 #2 Diskurs

16650

DMOJ COCI '22 Contest 5 #1 Kalendar

16649

DMOJ COCI '22 Contest 4 #5 Vrsta

16648

DMOJ COCI '22 Contest 4 #4 Mreža

16647

DMOJ COCI '22 Contest 4 #3 Bojanje

16646