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)
17201	DMOJ DMPG '16 B5 - Bank Burning
17200	DMOJ DMPG '16 B4 - The Gambler's Legacy
17199	DMOJ DMPG '16 B3 - CCO
17198	DMOJ DMPG '16 B2 - Reward Reminiscence
17197	DMOJ DMPG '16 B1 - BFS
17196	DMOJ DMPG '15 S6 - Apples to Oranges
17195	DMOJ DMPG '15 S5 - Black and White
17194	DMOJ DMPG '15 S4 - Signal Hill
17193	DMOJ DMPG '15 S3 - Zen Garden
17192	DMOJ DMPG '15 S2 - MMORPG
17191	DMOJ DMPG '15 S1 - Collecting Dust
17190	DMOJ DMPG '15 G6 - Yōkan
17189	DMOJ DMPG '15 G5 - ExpedColle
17188	DMOJ DMPG '15 G4 - Spacetime Convergence Cannons
17187	DMOJ DMPG '15 G3 - Kinako Bread 2
17186	DMOJ DMPG '15 G2 - 1-String B2-VPG Representation of Planar Graphs
17185	DMOJ DMPG '15 G1 - Marcia and Maze
17184	DMOJ DMPG '15 B6 - Bad S'mores
17183	DMOJ DMPG '15 B5 - Lux-urious S'mores
17182	DMOJ DMPG '15 B4 - Maximum Product
17181	DMOJ DMPG '15 B3 - Picking Berries
17180	DMOJ DMPG '15 B2 - Trunk in Trunk
17179	DMOJ DMPG '15 B1 - Loner Phoner
17178	DMOJ DMOPC '22 Contest 5 P6 - Threes and Twos
17177	DMOJ DMOPC '22 Contest 5 P5 - Twos and Threes
17176	DMOJ DMOPC '22 Contest 5 P4 - Ricochet
17175	DMOJ DMOPC '22 Contest 5 P3 - Sorted XOR
17174	DMOJ DMOPC '22 Contest 5 P2 - Absolutely Even
17173	DMOJ DMOPC '22 Contest 5 P1 - Triple Triplets
17172	DMOJ DMOPC '22 Contest 4 P6 - K-Sort
17171	DMOJ DMOPC '22 Contest 4 P5 - Blackboard Game
17170	DMOJ DMOPC '22 Contest 4 P4 - Anki Reviews
17169	DMOJ DMOPC '22 Contest 4 P3 - K-Knight
17168	DMOJ DMOPC '22 Contest 4 P2 - Fake Painting
17167	DMOJ DMOPC '22 Contest 4 P1 - Alone Time
17166	DMOJ DMOPC '22 Contest 3 P6 - Compressibility
17165	DMOJ DMOPC '22 Contest 3 P5 - Alice Rebalancing
17164	DMOJ DMOPC '22 Contest 3 P4 - Sketchy Cereal
17163	DMOJ DMOPC '22 Contest 3 P3 - Ina's Takodachis
17162	DMOJ DMOPC '22 Contest 3 P2 - New Components
17161	DMOJ DMOPC '22 Contest 3 P1 - Holiday Colouring
17160	DMOJ DMOPC '22 Contest 2 P6 - Yogyakarta Elevators
17159	DMOJ DMOPC '22 Contest 2 P5 - Beautiful Bins
17158	DMOJ DMOPC '22 Contest 2 P4 - Falling Leaves
17157	DMOJ DMOPC '22 Contest 2 P3 - Good Permutations
17156	DMOJ DMOPC '22 Contest 2 P2 - Line Trace
17155	DMOJ DMOPC '22 Contest 2 P1 - DMOPC Crisis
17154	DMOJ DMOPC '22 Contest 1 P6 - Linear Swap
17153	DMOJ DMOPC '22 Contest 1 P5 - Wesley's Cabins
17152	DMOJ DMOPC '22 Contest 1 P4 - Card Game

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

17201

DMOJ DMPG '16 B5 - Bank Burning

17200

DMOJ DMPG '16 B4 - The Gambler's Legacy

17199

DMOJ DMPG '16 B3 - CCO

17198

DMOJ DMPG '16 B2 - Reward Reminiscence

17197

DMOJ DMPG '16 B1 - BFS

17196