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)
23376	2023 USAJMO Problem 6
23375	2023 USAJMO Problem 5
23374	2023 USAJMO Problem 4
23373	2023 USAJMO Problem 3
23372	2023 USAJMO Problem 2
23371	2023 USAJMO Problem 1
23370	2022 USAJMO Problem 6
23369	2022 USAJMO Problem 5
23368	2022 USAJMO Problem 4
23367	2022 USAJMO Problem 3
23366	2022 USAJMO Problem 2
23365	2022 USAJMO Problem 1
23364	2021 USAJMO Problem 6
23363	2021 USAJMO Problem 5
23362	2021 USAJMO Problem 4
23361	2021 USAJMO Problem 3
23360	2021 USAJMO Problem 2
23359	2021 USAJMO Problem 1
23358	2020 USAJMO Problem 6
23357	2020 USAJMO Problem 5
23356	2020 USAJMO Problem 4
23355	2020 USAJMO Problem 3
23354	2020 USAJMO Problem 2
23353	2020 USAJMO Problem 1
23352	2019 USAJMO Problem 6
23351	2019 USAJMO Problem 5
23350	2019 USAJMO Problem 4
23349	2019 USAJMO Problem 3
23348	2019 USAJMO Problem 2
23347	2019 USAJMO Problem 1
23346	2018 USAJMO Problem 6
23345	2018 USAJMO Problem 5
23344	2018 USAJMO Problem 4
23343	2018 USAJMO Problem 3
23342	2018 USAJMO Problem 2
23341	2018 USAJMO Problem 1
23340	2017 USAJMO Problem 6
23339	2017 USAJMO Problem 5
23338	2017 USAJMO Problem 4
23337	2017 USAJMO Problem 3
23336	2017 USAJMO Problem 2
23335	2017 USAJMO Problem 1
23334	2016 USAJMO Problem 6
23333	2016 USAJMO Problem 5
23332	2016 USAJMO Problem 4
23331	2016 USAJMO Problem 3
23330	2016 USAJMO Problem 2
23329	2016 USAJMO Problem 1
23328	2015 USAJMO Problem 6
23327	2015 USAJMO Problem 5

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

23376

2023 USAJMO Problem 6

23375

2023 USAJMO Problem 5

23374

2023 USAJMO Problem 4

23373

2023 USAJMO Problem 3

23372

2023 USAJMO Problem 2

23371