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)
16401	DMOJ COCI '15 Contest 3 #6 Domino
16400	DMOJ COCI '15 Contest 3 #5 Nekameleoni
16399	DMOJ COCI '15 Contest 3 #4 Slon
16398	DMOJ COCI '15 Contest 3 #3 Molekule
16397	DMOJ COCI '15 Contest 3 #2 Esej
16396	DMOJ COCI '15 Contest 3 #1 Pot
16395	DMOJ COCI '15 Contest 2 #6 Država
16394	DMOJ COCI '15 Contest 2 #5 Vudu
16393	DMOJ COCI '15 Contest 2 #4 Savez
16392	DMOJ COCI '15 Contest 2 #3 Artur
16391	DMOJ COCI '15 Contest 2 #2 Geppetto
16390	DMOJ COCI '15 Contest 2 #1 Marko
16389	DMOJ COCI '15 Contest 1 #6 Uzastopni
16388	DMOJ COCI '15 Contest 1 #5 Relativnost
16387	DMOJ COCI '15 Contest 1 #4 Topovi
16386	DMOJ COCI '15 Contest 1 #3 Baloni
16385	DMOJ COCI '15 Contest 1 #2 Akcija
16384	DMOJ COCI '15 Contest 1 #1 Karte
16383	DMOJ COCI '14 Contest 7 #6 Police
16382	DMOJ COCI '14 Contest 7 #5 Prosjek
16381	DMOJ COCI '14 Contest 7 #4 Janje
16380	DMOJ COCI '14 Contest 7 #3 ACM
16379	DMOJ COCI '14 Contest 7 #2 Kriza
16378	DMOJ COCI '14 Contest 7 #1 Teta
16377	DMOJ COCI '14 Contest 6 #6 WTF
16376	DMOJ COCI '14 Contest 6 #5 Neo
16375	DMOJ COCI '14 Contest 6 #4 Kratki
16374	DMOJ COCI '14 Contest 6 #3 Meteor
16373	DMOJ COCI '14 Contest 6 #2 Niko
16372	DMOJ COCI '14 Contest 6 #1 Paprika
16371	DMOJ COCI '14 Contest 5 #6 Divljak
16370	DMOJ COCI '14 Contest 5 #5 Jabuke
16369	DMOJ COCI '14 Contest 5 #4 Zgodan
16368	DMOJ COCI '14 Contest 5 #3 Traktor
16367	DMOJ COCI '14 Contest 5 #2 Zmija
16366	DMOJ COCI '14 Contest 5 #1 Funghi
16365	DMOJ COCI '14 Contest 4 #6 Stanovi
16364	DMOJ COCI '14 Contest 4 #5 Sabor
16363	DMOJ COCI '14 Contest 4 #4 Mravi
16362	DMOJ COCI '14 Contest 4 #3 Pripreme
16361	DMOJ COCI '14 Contest 4 #2 Pšenica
16360	DMOJ COCI '14 Contest 4 #1 Cesta
16359	DMOJ COCI '14 Contest 3 #6 Kamioni
16358	DMOJ COCI '14 Contest 3 #5 Stogovi
16357	DMOJ COCI '14 Contest 3 #4 Coci
16356	DMOJ COCI '14 Contest 3 #3 Silueta
16355	DMOJ COCI '14 Contest 3 #2 Dom
16354	DMOJ COCI '14 Contest 3 #1 Strojopis
16353	DMOJ COCI '14 Contest 2 #6 Norma
16352	DMOJ COCI '14 Contest 2 #5 Šuma

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

16401

DMOJ COCI '15 Contest 3 #6 Domino

16400

DMOJ COCI '15 Contest 3 #5 Nekameleoni

16399

DMOJ COCI '15 Contest 3 #4 Slon

16398

DMOJ COCI '15 Contest 3 #3 Molekule

16397

DMOJ COCI '15 Contest 3 #2 Esej

16396