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)
16251	DMOJ COCI '11 Contest 3 #6 Traka
16250	DMOJ COCI '11 Contest 3 #5 Plače
16249	DMOJ COCI '11 Contest 3 #4 Robot
16248	DMOJ COCI '11 Contest 3 #3 Pogodak
16247	DMOJ COCI '11 Contest 3 #2 D'hondt
16246	DMOJ COCI '11 Contest 3 #1 Digitalna
16245	DMOJ COCI '11 Contest 2 #6 Raspored
16244	DMOJ COCI '11 Contest 2 #5 Funkcija
16243	DMOJ COCI '11 Contest 2 #4 KompičI
16242	DMOJ COCI '11 Contest 2 #3 Zadaća
16241	DMOJ COCI '11 Contest 2 #2 Okret
16240	DMOJ COCI '11 Contest 2 #1 Najboljih 5
16239	DMOJ COCI '11 Contest 1 #6 Skakac
16238	DMOJ COCI '11 Contest 1 #5 Sort
16237	DMOJ COCI '11 Contest 1 #4 Ples
16236	DMOJ COCI '11 Contest 1 #3 X3
16235	DMOJ COCI '11 Contest 1 #2 Matrix
16234	DMOJ COCI '11 Contest 1 #1 Jabuke
16233	DMOJ COCI '10 Contest 7 #6 Upit
16232	DMOJ COCI '10 Contest 7 #5 Kuglice
16231	DMOJ COCI '10 Contest 7 #4 Poštar
16230	DMOJ COCI '10 Contest 7 #3 Gitara
16229	DMOJ COCI '10 Contest 7 #2 Kolo
16228	DMOJ COCI '10 Contest 7 #1 Šećer
16227	DMOJ COCI '10 Contest 6 #6 Voda
16226	DMOJ COCI '10 Contest 6 #5 Step
16225	DMOJ COCI '10 Contest 6 #4 Abeceda
16224	DMOJ COCI '10 Contest 6 #3 Razine
16223	DMOJ COCI '10 Contest 6 #2 Uspon
16222	DMOJ COCI '10 Contest 6 #1 Okulpjanje
16221	DMOJ COCI '10 Contest 5 #6 Slika
16220	DMOJ COCI '10 Contest 5 #5 Dvoniz
16219	DMOJ COCI '10 Contest 5 #4 Honi
16218	DMOJ COCI '10 Contest 5 #3 Brodovi
16217	DMOJ COCI '10 Contest 5 #2 Košarka
16216	DMOJ COCI '10 Contest 5 #1 Gljive
16215	DMOJ COCI '10 Contest 4 #6 Hrpa
16214	DMOJ COCI '10 Contest 4 #5 Dugovi
16213	DMOJ COCI '10 Contest 4 #4 Prosjek
16212	DMOJ COCI '10 Contest 4 #3 Astro
16211	DMOJ COCI '10 Contest 4 #2 Parket
16210	DMOJ COCI '10 Contest 4 #1 Avion
16209	DMOJ COCI '10 Contest 3 #6 Mono
16208	DMOJ COCI '10 Contest 3 #5 Diferencija
16207	DMOJ COCI '10 Contest 3 #4 Znanstvenik
16206	DMOJ COCI '10 Contest 3 #3 Ekipa
16205	DMOJ COCI '10 Contest 3 #2 Zbroj
16204	DMOJ COCI '10 Contest 3 #1 Tablica
16203	DMOJ COCI '10 Contest 2 #6 Crni
16202	DMOJ COCI '10 Contest 2 #5 Lunapark

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

16251

DMOJ COCI '11 Contest 3 #6 Traka

16250

DMOJ COCI '11 Contest 3 #5 Plače

16249

DMOJ COCI '11 Contest 3 #4 Robot

16248

DMOJ COCI '11 Contest 3 #3 Pogodak

16247

DMOJ COCI '11 Contest 3 #2 D'hondt

16246