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)
19001	DMOJ SAC '22 Code Challenge 2 P1 - Calendar Management
19000	DMOJ SAC '22 Code Challenge 1 P5 - That Wall
18999	DMOJ SAC '22 Code Challenge 1 P4 - That Problem
18998	DMOJ SAC '22 Code Challenge 1 P3 - That Pool
18997	DMOJ SAC '22 Code Challenge 1 P2 - That Circle
18996	DMOJ SAC '22 Code Challenge 1 P1 - That Teacher
18995	DMOJ SAC '21 Code Challenge P5 - Friends of Friends
18994	DMOJ SAC '21 Code Challenge P4 - Averaging Averages
18993	DMOJ SAC '21 Code Challenge P3 - DeMello's Replacement
18992	DMOJ SAC '21 Code Challenge P2 - Littering
18991	DMOJ SAC '21 Code Challenge P1 - Shrinkage
18990	DMOJ Rule of Lemons
18989	DMOJ Ancient Castle Ruins
18988	DMOJ Rubik's Cube Solver
18987	DMOJ RTE '16 S3 - School Traversal
18986	DMOJ RTE '16 S2 - Fire Evacuation Plan
18985	DMOJ RTE '16 S1 - Battery Pyramids
18984	DMOJ RTE '16 J3 - Mule Wars
18983	DMOJ RTE '16 J2 - Guidance Counselling
18982	DMOJ RTE '16 J1 - Board Game
18981	DMOJ Recurrence Solver
18980	DMOJ Root Solver
18979	DMOJ Rolling Encryption
18978	DMOJ ROI '17 P4 - Travel To Metropolis
18977	DMOJ Road Redirection
18976	DMOJ ICPC RMRC 2016 J - Stack Construction
18975	DMOJ Riddle Troll
18974	DMOJ Richmond Green P4 - HEIGHT
18973	DMOJ Richmond Green P3 - ABBA
18972	DMOJ Richmond Green P2 - LOL
18971	DMOJ Richmond Green P1 - HSIUNG
18970	DMOJ RGPC '18 P5 - Wormhole
18969	DMOJ RGPC '18 P4 - Higgs
18968	DMOJ RGPC '18 P3 - Chocolate Day
18967	DMOJ RGPC '18 P2 - Performance Points
18966	DMOJ RGPC '18 P1 - Giant Cookie
18965	DMOJ RGPC '17 P5 - Scrabble Nuts
18964	DMOJ RGPC '17 P4 - Snow Day
18963	DMOJ RGPC '17 P3 - Intercept
18962	DMOJ RGPC '17 P2 - Cubes are Life
18961	DMOJ RGPC '17 P1 - Circle Clicking!
18960	DMOJ Revenge of the Digger
18959	DMOJ Return of the Digger
18958	DMOJ Better Censor
18957	DMOJ Find Dates
18956	DMOJ You Might be a Redneck
18955	DMOJ Rectangle Counting
18954	DMOJ James' Rectangles
18953	DMOJ A Romantic Dinner Outing
18952	DMOJ Riolku's Mock CCC S5 - Keen Keener Multiset

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

19001

DMOJ SAC '22 Code Challenge 2 P1 - Calendar Management

19000

DMOJ SAC '22 Code Challenge 1 P5 - That Wall

18999

DMOJ SAC '22 Code Challenge 1 P4 - That Problem

18998

DMOJ SAC '22 Code Challenge 1 P3 - That Pool

18997

DMOJ SAC '22 Code Challenge 1 P2 - That Circle

18996