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)
15501	DMOJ Back To School '17: New English
15500	DMOJ Back To School '17: Wet Mud
15499	DMOJ Back To School '17: Physics
15498	DMOJ Back To School '17: Avalon
15497	DMOJ Back To School '17: 🅱aram🅱e
15496	DMOJ Back To School '16: Textbooks
15495	DMOJ Back To School '16: Contest Practice
15494	DMOJ Back To School '16: Times Table
15493	DMOJ Back To School '16: Cherry Tree
15492	DMOJ Back To School '16: Screensaver
15491	DMOJ Back To School '16: Dodgeball
15490	DMOJ Back To School '16: Paradox
15489	DMOJ Back To School '16: Harambe
15488	DMOJ Baltic OI '20 P3 - Joker
15487	DMOJ Baltic OI '19 P6 - Olympiads
15486	DMOJ Baltic OI '19 P5 - Necklace
15485	DMOJ Baltic OI '19 P4 - Tom's Kitchen
15484	DMOJ Baltic OI '19 P3 - Alpine Valley
15483	DMOJ Baltic OI '19 P2 - Nautilus
15482	DMOJ Baltic OI '18 P6 - Paths
15481	DMOJ Baltic OI '18 P5 - Genetics
15480	DMOJ Baltic OI '18 P4 - Alternating Current
15479	DMOJ Baltic OI '18 P3 - Worm Worries
15478	DMOJ Baltic OI '18 P2 - Martian DNA
15477	DMOJ Baltic OI '18 P1 - Love Polygon
15476	DMOJ Baltic OI '17 P6 - Cat in a tree
15475	DMOJ Baltic OI '17 P5 - Plus Minus
15474	DMOJ Baltic OI '17 P4 - Friends
15473	DMOJ Baltic OI '17 P3 - Railway
15472	DMOJ Baltic OI '17 P2 - Toll
15471	DMOJ Baltic OI '17 P1 - Political Development
15470	DMOJ Baltic OI '16 P6 - Swap
15469	DMOJ Baltic OI '16 P5 - Maze
15468	DMOJ Baltic OI '16 P4 - Cities
15467	DMOJ Baltic OI '16 P3 - Spiral
15466	DMOJ Baltic OI '16 P2 - Park
15465	DMOJ Baltic OI '16 P1 - Bosses
15464	DMOJ Baltic OI '15 P6 - Tug of War
15463	DMOJ Baltic OI '15 P5 - Hacker
15462	DMOJ Baltic OI '15 P4 - File Paths
15461	DMOJ Baltic OI '15 P3 - Network
15460	DMOJ Baltic OI '15 P2 - Editor
15459	DMOJ Baltic OI '15 P1 - Bowling
15458	DMOJ Baltic OI '14 P6 - Senior Postmen
15457	DMOJ Baltic OI '14 P5 - Portals
15456	DMOJ Baltic OI '14 P4 - Demarcation
15455	DMOJ Baltic OI '14 P3 - Sequence
15454	DMOJ Baltic OI '14 P2 - Three Friends
15453	DMOJ Baltic OI '13 P6 - Vim
15452	DMOJ Baltic OI '13 P5 - Tracks in the Snow

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

15501

DMOJ Back To School '17: New English

15500

DMOJ Back To School '17: Wet Mud

15499

DMOJ Back To School '17: Physics

15498

DMOJ Back To School '17: Avalon

15497

DMOJ Back To School '17: 🅱aram🅱e

15496