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)
15251	DMOJ Art Academy VII: A Mysterious Object
15250	DMOJ Art Academy VI: The Last Stand
15249	DMOJ Art Academy V: Ruin
15248	DMOJ Art Academy IV: Alice's Blazing Fury
15247	DMOJ Art Academy III: Sabotage
15246	DMOJ Art Academy II: The Grand Escape
15245	DMOJ Art Academy
15244	DMOJ Art Academy 0: Prologue
15243	DMOJ Another Random Contest 1 P6 - Smash Bros
15242	DMOJ Another Random Contest 1 P5 - A Strange Country
15241	DMOJ Another Random Contest 1 P4 - Bracket Query
15240	DMOJ Another Random Contest 1 P3 - Physics Olympics
15239	DMOJ Another Random Contest 1 P2 - Two Sequences
15238	DMOJ Another Random Contest 1 P1 - Chessgame
15237	DMOJ APTX 4869
15236	DMOJ All Pairs Shortest Path
15235	DMOJ Marcus Approximation
15234	DMOJ A Plus B (Hard)
15233	DMOJ A Plus B
15232	DMOJ APIO '23 P3 - Alice, Bob, and Circuit
15231	DMOJ APIO '23 P2 - Sequence
15230	DMOJ APIO '23 P1 - Cyberland
15229	DMOJ APIO '22 P3 - Perm
15228	DMOJ APIO '22 P2 - Game
15227	DMOJ APIO '19 P3 - Street Lamps
15226	DMOJ APIO '19 P2 - Bridges
15225	DMOJ APIO '19 P1 - Strange Device
15224	DMOJ APIO '18 P3 - Duathlon
15223	DMOJ APIO '18 P2 - Circle Selection
15222	DMOJ APIO '18 P1 - New Home
15221	DMOJ APIO '17 P2 - Travelling Merchant
15220	DMOJ APIO '17 P1 - Land of the Rainbow Gold
15219	DMOJ APIO '16 P2 - Fireworks
15218	DMOJ APIO '16 P1 - Boat
15217	DMOJ APIO '15 P3 - Palembang Bridges
15216	DMOJ APIO '15 P2 - Jakarta Skyscrapers
15215	DMOJ APIO '15 P1 - Bali Sculptures
15214	DMOJ APIO '14 P3 - Beads and Wires
15213	DMOJ APIO '14 P2 - Split the Sequence
15212	DMOJ APIO '14 P1 - Palindromes
15211	DMOJ APIO '13 P2 - Toll
15210	DMOJ APIO '13 P1 - Robots
15209	DMOJ APIO '12 P3 - Kunai
15208	DMOJ APIO '12 P2 - Guard
15207	DMOJ APIO '12 P1 - Dispatching
15206	DMOJ APIO '11 P3 - Guess My Word!
15205	DMOJ APIO '11 P2 - Find the Path
15204	DMOJ APIO '11 P1 - Table Coloring
15203	DMOJ APIO '10 P3 - Signaling
15202	DMOJ APIO '10 P2 - Patrol

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

15251

DMOJ Art Academy VII: A Mysterious Object

15250

DMOJ Art Academy VI: The Last Stand

15249

DMOJ Art Academy V: Ruin

15248

DMOJ Art Academy IV: Alice's Blazing Fury

15247

DMOJ Art Academy III: Sabotage

15246