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)
16751	DMOJ CSPC '15 #4 - Reading Logs
16750	DMOJ CSPC '15 #3 - Spell Check
16749	DMOJ CSPC '15 #2 - Build Season
16748	DMOJ CSPC '15 #1 - The Card Game
16747	DMOJ COCI '08 Regional #6 Cvjetici
16746	DMOJ COCI '08 Regional #5 Reljef
16745	DMOJ COCI '08 Regional #4 Tablica
16744	DMOJ COCI '08 Regional #3 Cijevi
16743	DMOJ COCI '08 Regional #2 Majstor
16742	DMOJ COCI '08 Regional #1 Nop
16741	DMOJ COCI '07 Regional #4 Jednakost
16740	DMOJ COCI '07 Regional #3 Kuhar
16739	DMOJ COCI '07 Regional #2 Nikola
16738	DMOJ COCI '07 Regional #1 Platforme
16737	DMOJ COCI '06 Regional #4 Circle
16736	DMOJ COCI '06 Regional #3 Firefly
16735	DMOJ COCI '06 Regional #2 Tetris
16734	DMOJ COCI '06 Regional #1 Bard
16733	DMOJ CPC '21 Contest 1 P7 - AQT and Quarantine
16732	DMOJ CPC '21 Contest 1 P6 - AQT's Break Time is Over
16731	DMOJ CPC '21 Contest 1 P5 - AQT and Modern Art
16730	DMOJ CPC '21 Contest 1 P4 - AQT and Directed Graph
16729	DMOJ CPC '21 Contest 1 P3 - AQT and Circles
16728	DMOJ CPC '21 Contest 1 P2 - AQT and Multiset
16727	DMOJ CPC '21 Contest 1 P1 - AQT and Fractions
16726	DMOJ CPC '21 Contest 1 P0 - AQT and Alphabet
16725	DMOJ CPC '19 Contest 1 P6 - Maintaining Some Coins
16724	DMOJ CPC '19 Contest 1 P5 - A Puzzlingly Puzzling Puzzle Problem 😎
16723	DMOJ CPC '19 Contest 1 P4 - Sorting Practice
16722	DMOJ CPC '19 Contest 1 P3 - Admiral Kuznetsov
16721	DMOJ CPC '19 Contest 1 P2 - Luggage
16720	DMOJ CPC '19 Contest 1 P1 - Distance
16719	DMOJ CPC '19 Contest 1 P0 - Shoes
16718	DMOJ Non-constructive Constant Time Algorithm
16717	DMOJ Ray's Tricky Connectivity
16716	DMOJ Data Compression
16715	DMOJ Comparing Arrays
16714	DMOJ 3n+1
16713	DMOJ COI '20 #4 MalnaRISC
16712	DMOJ COI '20 #3 Izvanzemaljci
16711	DMOJ COI '20 #2 Cigle
16710	DMOJ COI '20 #1 Autobahn
16709	DMOJ COI '19 #4 Zagrade
16708	DMOJ COI '19 #3 Semafor
16707	DMOJ COI '19 #2 Pastiri
16706	DMOJ COI '19 #1 Paint
16705	DMOJ COI '18 #4 Tenis
16704	DMOJ COI '18 #3 Segway
16703	DMOJ COI '18 #2 Ljepotica
16702	DMOJ COI '18 #1 Izlet

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

16751

DMOJ CSPC '15 #4 - Reading Logs

16750

DMOJ CSPC '15 #3 - Spell Check

16749

DMOJ CSPC '15 #2 - Build Season

16748

DMOJ CSPC '15 #1 - The Card Game

16747

DMOJ COCI '08 Regional #6 Cvjetici

16746