Starlight: List of Problems

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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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ID Problem Name (click to add insights/hints, view summary of insights/hints and similar problems)
4071 Codeforces 954F: Runner's Problem
4070 Codeforces 954E: Water Taps
4069 Codeforces 954D: Fight Against Traffic
4068 Codeforces 954C: Matrix Walk
4067 Codeforces 954B: String Typing
4066 Codeforces 954A: Diagonal Walking
4065 Codeforces 952G: Puzzling Language
4064 Codeforces 952F: 2 + 2 != 4
4063 Codeforces 952E: Cheese Board
4062 Codeforces 952D: I'm Feeling Lucky!
4061 Codeforces 952C: Ravioli Sort
4060 Codeforces 952B: A Map of the Cat
4059 Codeforces 952A: Quirky Quantifiers
4058 Codeforces 950B: Intercepted Message
4057 Codeforces 950A: Left-handers, Right-handers and Ambidexters
4056 Codeforces 949F: Astronomy
4055 Codeforces 949E: Binary Cards
4054 Codeforces 949D: Curfew
4053 Codeforces 949C: Data Center Maintenance
4052 Codeforces 949B: A Leapfrog in the Array
4051 Codeforces 949A: Zebras
4050 Codeforces 948A: Protect Sheep
4049 Codeforces 946G: Almost Increasing Array
4048 Codeforces 946F: Fibonacci String Subsequences
4047 Codeforces 946E: Largest Beautiful Number
4046 Codeforces 946D: Timetable
4045 Codeforces 946C: String Transformation
4044 Codeforces 946B: Weird Subtraction Process
4043 Codeforces 946A: Partition
4042 Codeforces 940F: Machine Learning
4041 Codeforces 940E: Cashback
4040 Codeforces 940D: Alena And The Heater
4039 Codeforces 940C: Phone Numbers
4038 Codeforces 940B: Our Tanya is Crying Out Loud
4037 Codeforces 940A: Points on the line
4036 Codeforces 939F: Cutlet
4035 Codeforces 939E: Maximize!
4034 Codeforces 939D: Love Rescue
4033 Codeforces 939C: Convenient For Everybody
4032 Codeforces 939B: Hamster Farm
4031 Codeforces 939A: Love Triangle
4030 Codeforces 938G: Shortest Path Queries
4029 Codeforces 938F: Erasing Substrings
4028 Codeforces 938E: Max History
4027 Codeforces 938D: Buy a Ticket
4026 Codeforces 938C: Constructing Tests
4025 Codeforces 938B: Run For Your Prize
4024 Codeforces 938A: Word Correction
4023 Codeforces 937B: Vile Grasshoppers
4022 Codeforces 937A: Olympiad
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