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)
16301	DMOJ COCI '12 Contest 6 #2 Sume
16300	DMOJ COCI '12 Contest 6 #1 Baka
16299	DMOJ COCI '12 Contest 5 #6 Mnogomet
16298	DMOJ COCI '12 Contest 5 #5 Rotiraj
16297	DMOJ COCI '12 Contest 5 #4 Hipercijevi
16296	DMOJ COCI '12 Contest 5 #3 Totem
16295	DMOJ COCI '12 Contest 5 #2 Arhipelag
16294	DMOJ COCI '12 Contest 5 #1 Ljestvica
16293	DMOJ COCI '12 Contest 4 #6 Akvarij
16292	DMOJ COCI '12 Contest 4 #5 Dlakavac
16291	DMOJ COCI '12 Contest 4 #4 Razlika
16290	DMOJ COCI '12 Contest 4 #3 Voyager
16289	DMOJ COCI '12 Contest 4 #2 Esej
16288	DMOJ COCI '12 Contest 4 #1 Orehnjaca
16287	DMOJ COCI '12 Contest 3 #6 Procesor
16286	DMOJ COCI '12 Contest 3 #5 Herkabe
16285	DMOJ COCI '12 Contest 3 #4 Aerodrom
16284	DMOJ COCI '12 Contest 3 #3 Malcolm
16283	DMOJ COCI '12 Contest 3 #2 Poredak
16282	DMOJ COCI '12 Contest 3 #1 Sahovnica
16281	DMOJ COCI '12 Contest 2 #6 Inspektor
16280	DMOJ COCI '12 Contest 2 #5 Informacije
16279	DMOJ COCI '12 Contest 2 #4 Popust
16278	DMOJ COCI '12 Contest 2 #3 Lanci
16277	DMOJ COCI '12 Contest 2 #2 Krizaljka
16276	DMOJ COCI '12 Contest 2 #1 Mortadela
16275	DMOJ COCI '12 Contest 1 #6 Mars
16274	DMOJ COCI '12 Contest 1 #5 Snaga
16273	DMOJ COCI '12 Contest 1 #4 Ljubomora
16272	DMOJ COCI '12 Contest 1 #3 Koncert
16271	DMOJ COCI '12 Contest 1 #2 F7
16270	DMOJ COCI '12 Contest 1 #1 DOM
16269	DMOJ COCI '11 Contest 6 #6 Košare
16268	DMOJ COCI '11 Contest 6 #5 Pastele
16267	DMOJ COCI '11 Contest 6 #4 Rez
16266	DMOJ COCI '11 Contest 6 #3 Zagrade
16265	DMOJ COCI '11 Contest 6 #2 Prozori
16264	DMOJ COCI '11 Contest 6 #1 Jack
16263	DMOJ COCI '11 Contest 5 #6 Popločavanje
16262	DMOJ COCI '11 Contest 5 #5 Blokovi
16261	DMOJ COCI '11 Contest 5 #4 Razbibriga
16260	DMOJ COCI '11 Contest 5 #3 Dna
16259	DMOJ COCI '11 Contest 5 #2 Eko
16258	DMOJ COCI '11 Contest 5 #1 Križaljka
16257	DMOJ COCI '11 Contest 4 #6 Kriptogram
16256	DMOJ COCI '11 Contest 4 #5 Broj
16255	DMOJ COCI '11 Contest 4 #4 Ograda
16254	DMOJ COCI '11 Contest 4 #3 Keks
16253	DMOJ COCI '11 Contest 4 #2 Zima
16252	DMOJ COCI '11 Contest 4 #1 Kino

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

16301

DMOJ COCI '12 Contest 6 #2 Sume

16300

DMOJ COCI '12 Contest 6 #1 Baka

16299

DMOJ COCI '12 Contest 5 #6 Mnogomet

16298

DMOJ COCI '12 Contest 5 #5 Rotiraj

16297

DMOJ COCI '12 Contest 5 #4 Hipercijevi

16296