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)
15401	DMOJ Baltic OI '05 P2 - LISP
15400	DMOJ Baltic OI '05 P1 - Camouflaged camp
15399	DMOJ Baltic OI '04 P6 - Car Park
15398	DMOJ Baltic OI '04 P5 - Rectangles
15397	DMOJ Baltic OI '04 P4 - Repeats
15396	DMOJ Baltic OI '04 P3 - Sequence
15395	DMOJ Baltic OI '04 P2 - Scales
15394	DMOJ Baltic OI '04 P1 - Ships
15393	DMOJ Baltic OI '03 P5 - Lamps
15392	DMOJ Baltic OI '03 P4 - The Gangs
15391	DMOJ Baltic OI '03 P3 - Table
15390	DMOJ Baltic OI '03 P2 - Gems
15389	DMOJ Baltic OI '03 P1 - Barrel
15388	DMOJ Baltic OI '02 P4 - Bicriterial Routing
15387	DMOJ Baltic OI '02 P3 - Triangles
15386	DMOJ Baltic OI '02 P2 - Tennis Club
15385	DMOJ Baltic OI '02 P1 - Speed Limits
15384	DMOJ Baltic OI '01 P6 - Teleports
15383	DMOJ Baltic OI '01 P5 - Mars Maps
15382	DMOJ Baltic OI '01 P4 - Knights
15381	DMOJ Baltic OI '01 P3 - Box of Mirrors
15380	DMOJ Baltic OI '01 P2 - Crack the Code
15379	DMOJ Baltic OI '01 P1 - Postman
15378	DMOJ BSSPC '22 P8 - Bayview's RGB Gaming PC
15377	DMOJ BSSPC '22 P7 - Exec Team Applications
15376	DMOJ BSSPC '22 P6 - Permutations & Primogems
15375	DMOJ BSSPC '22 P5 - Derrick and Orz Trees
15374	DMOJ BSSPC '22 P4 - Exec Pieing
15373	DMOJ BSSPC '22 P3 - Searching for Seats
15372	DMOJ BSSPC '22 P2 - Rhyming Numbers
15371	DMOJ BSSPC '22 P1 - Bubble Tea Tracker
15370	DMOJ BSSPC '21 S5 - James Solves His Tree Problems
15369	DMOJ BSSPC '21 S4 - Child Prodigy Chadstin
15368	DMOJ BSSPC '21 S3 - James's Egirl Discord Status
15367	DMOJ BSSPC '21 S2 - Hacker Soup
15366	DMOJ BSSPC '21 S1 - Lakshy and Palindromic Rectangle
15365	DMOJ BSSPC '21 J6 - Lakshy and Orz Trees
15364	DMOJ BSSPC '21 J5 - James and the Euclid Test
15363	DMOJ BSSPC '21 J4 - James's Magical Soups
15362	DMOJ BSSPC '21 J3 - Magic Paint Gun Cartridges
15361	DMOJ BSSPC '21 J2 - James and Youtube
15360	DMOJ BSSPC '21 J1 - Eggy's New Clothes
15359	DMOJ Battleships
15358	DMOJ Fast Search
15357	DMOJ Polynomial Time Boolean Satisfiability
15356	DMOJ Bruce String
15355	DMOJ Bruce's Brittle Bridges
15354	DMOJ Brazilian IOI TST '19 Day 1 - Secret Santa
15353	DMOJ Brap Lesh Mafia
15352	DMOJ BPC 1 S6 - Painters

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

15401

DMOJ Baltic OI '05 P2 - LISP

15400

DMOJ Baltic OI '05 P1 - Camouflaged camp

15399

DMOJ Baltic OI '04 P6 - Car Park

15398

DMOJ Baltic OI '04 P5 - Rectangles

15397

DMOJ Baltic OI '04 P4 - Repeats

15396