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)
6171 Codeforces 1372D: Omkar and Circle
6170 Codeforces 1372C: Omkar and Baseball
6169 Codeforces 1372B: Omkar and Last Class of Math
6168 Codeforces 1372A: Omkar and Completion
6167 Codeforces 1371F: Raging Thunder
6166 Codeforces 1371E2: Asterism (Hard Version)
6165 Codeforces 1371E1: Asterism (Easy Version)
6164 Codeforces 1371D: Grid-00100
6163 Codeforces 1371C: A Cookie for You
6162 Codeforces 1371B: Magical Calendar
6161 Codeforces 1371A: Magical Sticks
6160 Codeforces 1370F2: The Hidden Pair (Hard Version)
6159 Codeforces 1370F1: The Hidden Pair (Easy Version)
6158 Codeforces 1370E: Binary Subsequence Rotation
6157 Codeforces 1370D: Odd-Even Subsequence
6156 Codeforces 1370C: Number Game
6155 Codeforces 1370B: GCD Compression
6154 Codeforces 1370A: Maximum GCD
6153 Codeforces 1369F: BareLee
6152 Codeforces 1369E: DeadLee
6151 Codeforces 1369D: TediousLee
6150 Codeforces 1369C: RationalLee
6149 Codeforces 1369B: AccurateLee
6148 Codeforces 1369A: FashionabLee
6147 Codeforces 1368H2: Breadboard Capacity (hard version)
6146 Codeforces 1368H1: Breadboard Capacity (easy version)
6145 Codeforces 1368G: Shifting Dominoes
6144 Codeforces 1368F: Lamps on a Circle
6143 Codeforces 1368E: Ski Accidents
6142 Codeforces 1368D: AND, OR and square sum
6141 Codeforces 1368C: Even Picture
6140 Codeforces 1368B: Codeforces Subsequences
6139 Codeforces 1368A: C+=
6138 Codeforces 1367F2: Flying Sort (Hard Version)
6137 Codeforces 1367F1: Flying Sort (Easy Version)
6136 Codeforces 1367E: Necklace Assembly
6135 Codeforces 1367D: Task On The Board
6134 Codeforces 1367C: Social Distance
6133 Codeforces 1367B: Even Array
6132 Codeforces 1367A: Short Substrings
6131 Codeforces 1366G: Construct the String
6130 Codeforces 1366F: Jog Around The Graph
6129 Codeforces 1366E: Two Arrays
6128 Codeforces 1366D: Two Divisors
6127 Codeforces 1366C: Palindromic Paths
6126 Codeforces 1366B: Shuffle
6125 Codeforces 1366A: Shovels and Swords
6124 Codeforces 1365G: Secure Password
6123 Codeforces 1365F: Swaps Again
6122 Codeforces 1365E: Maximum Subsequence Value
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