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)
23244	2023 USAMO Problem 6
23243	2023 USAMO Problem 5
23242	2023 USAMO Problem 4
23241	2023 USAMO Problem 3
23240	2023 USAMO Problem 2
23239	2023 USAMO Problem 1
23238	2022 USAMO Problem 6
23237	2022 USAMO Problem 5
23236	2022 USAMO Problem 4
23235	2022 USAMO Problem 3
23234	2022 USAMO Problem 2
23233	2022 USAMO Problem 1
23232	2021 USAMO Problem 6
23231	2021 USAMO Problem 5
23230	2021 USAMO Problem 4
23229	2021 USAMO Problem 3
23228	2021 USAMO Problem 2
23227	2021 USAMO Problem 1
23226	2020 USAMO Problem 6
23225	2020 USAMO Problem 5
23224	2020 USAMO Problem 4
23223	2020 USAMO Problem 3
23222	2020 USAMO Problem 2
23221	2020 USAMO Problem 1
23220	2019 USAMO Problem 6
23219	2019 USAMO Problem 5
23218	2019 USAMO Problem 4
23217	2019 USAMO Problem 3
23216	2019 USAMO Problem 2
23215	2019 USAMO Problem 1
23214	2018 USAMO Problem 6
23213	2018 USAMO Problem 5
23212	2018 USAMO Problem 4
23211	2018 USAMO Problem 3
23210	2018 USAMO Problem 2
23209	2018 USAMO Problem 1
23208	2017 USAMO Problem 6
23207	2017 USAMO Problem 5
23206	2017 USAMO Problem 4
23205	2017 USAMO Problem 3
23204	2017 USAMO Problem 2
23203	2017 USAMO Problem 1
23202	2016 USAMO Problem 6
23201	2016 USAMO Problem 5
23200	2016 USAMO Problem 4
23199	2016 USAMO Problem 3
23198	2016 USAMO Problem 2
23197	2016 USAMO Problem 1
23196	2015 USAMO Problem 6
23195	2015 USAMO Problem 5

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

23244

23243

23242

23241

23240

23239