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)
15551	DMOJ CCC '01 J1 - Dressing Up
15550	DMOJ CCC '00 S5 - Sheep and Coyotes (Hard)
15549	DMOJ CCC '00 S5 - Sheep and Coyotes
15548	DMOJ CCC '00 S4 - Golf
15547	DMOJ CCC '00 S3 - Surfing
15546	DMOJ CCC '00 S2 - Babbling Brooks
15545	DMOJ CCC '00 S1 - Slot Machines
15544	DMOJ CCC '00 J2 - 9966
15543	DMOJ CCC '00 J1 - Calendar
15542	DMOJ Castle Invasion
15541	DMOJ Casino Crisis
15540	DMOJ Carnival Game
15539	DMOJ Caporegime
15538	DMOJ Stingy Candyman
15537	DMOJ Canada Day Contest 2021 - Half Heart
15536	DMOJ Canada Day Contest 2021 - 0-1
15535	DMOJ Canada Day Contest 2021 - Starfall
15534	DMOJ Canada Day Contest 2021 - CCC Bad Haha
15533	DMOJ Canada Day Contest 2021 - Fine Art
15532	DMOJ Canada Day Contest 2021 - Bob and Canada
15531	DMOJ Security Cameras
15530	DMOJ Calendar Contest Problem 6 — Ming Dynasty
15529	DMOJ Calendar Contest Problem 5 — Reign of Terror
15528	DMOJ Calendar Contest Problem 4 — Savvyday 29 Oatmeal 94
15527	DMOJ Calendar Contest Problem 3 — Classical Maya
15526	DMOJ Calendar Contest Problem 2 — Day of the Week
15525	DMOJ Calendar Contest Problem 1 — Sexagenary Cycle
15524	DMOJ The Cake is a Dessert
15523	DMOJ Mighty Cactus
15522	DMOJ Bus Stops
15521	DMOJ Building
15520	DMOJ Back To School '19: Beautiful_Times' Fruit Scam
15519	DMOJ Back To School '19: FFT Fun
15518	DMOJ Back To School '19: Unstable Books
15517	DMOJ Back To School '19: Heist Night
15516	DMOJ Back To School '19: A Circular Game
15515	DMOJ Back To School '19: Chemistry
15514	DMOJ Back To School '19: Parkour
15513	DMOJ Back To School '19: H🅰️r🅰️mbe
15512	DMOJ Back To School '18: Function Maximization
15511	DMOJ Back To School '18: Trucking Troubles II
15510	DMOJ Back To School '18: The Golden Porcupine
15509	DMOJ Back To School '18: An FFT Problem
15508	DMOJ Back To School '18: Beautiful Trees
15507	DMOJ Back To School '18: Making Friends
15506	DMOJ Back To School '18: Letter Frequency
15505	DMOJ Back To School '18: Harambe
15504	DMOJ Back To School '17: Big Integer
15503	DMOJ Back To School '17: Hot and Cold
15502	DMOJ Back To School '17: Sour Candy

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

15551

DMOJ CCC '01 J1 - Dressing Up

15550

DMOJ CCC '00 S5 - Sheep and Coyotes (Hard)

15549

DMOJ CCC '00 S5 - Sheep and Coyotes

15548

DMOJ CCC '00 S4 - Golf

15547

DMOJ CCC '00 S3 - Surfing

15546