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)
10471 AtCoder ABC295: G. Minimum Reachable City
10470 AtCoder ABC295: F. substr = S
10469 AtCoder ABC295: E. Kth Number
10468 AtCoder ABC295: D. Three Days Ago
10467 AtCoder ABC295: C. Socks
10466 AtCoder ABC295: B. Bombs
10465 AtCoder ABC295: A. Probably English
10464 AtCoder ABC294: Ex. K-Coloring
10463 AtCoder ABC294: G. Distance Queries on a Tree
10462 AtCoder ABC294: F. Sugar Water 2
10461 AtCoder ABC294: E. 2xN Grid
10460 AtCoder ABC294: D. Bank
10459 AtCoder ABC294: C. Merge Sequences
10458 AtCoder ABC294: B. ASCII Art
10457 AtCoder ABC294: A. Filter
10456 AtCoder ABC293: Ex. Optimal Path Decomposition
10455 AtCoder ABC293: G. Triple Index
10454 AtCoder ABC293: F. Zero or One
10453 AtCoder ABC293: E. Geometric Progression
10452 AtCoder ABC293: D. Tying Rope
10451 AtCoder ABC293: C. Make Takahashi Happy
10450 AtCoder ABC293: B. Call the ID Number
10449 AtCoder ABC293: A. Swap Odd and Even
10448 AtCoder ABC292: Ex. Rating Estimator
10447 AtCoder ABC292: G. Count Strictly Increasing Sequences
10446 AtCoder ABC292: F. Regular Triangle Inside a Rectangle
10445 AtCoder ABC292: E. Transitivity
10444 AtCoder ABC292: D. Unicyclic Components
10443 AtCoder ABC292: C. Four Variables
10442 AtCoder ABC292: B. Yellow and Red Card
10441 AtCoder ABC292: A. CAPS LOCK
10440 AtCoder ABC291: Ex. Balanced Tree
10439 AtCoder ABC291: G. OR Sum
10438 AtCoder ABC291: F. Teleporter and Closed off
10437 AtCoder ABC291: E. Find Permutation
10436 AtCoder ABC291: D. Flip Cards
10435 AtCoder ABC291: C. LRUD Instructions 2
10434 AtCoder ABC291: B. Trimmed Mean
10433 AtCoder ABC291: A. camel Case
10432 AtCoder ABC290: Ex. Bow Meow Optimization
10431 AtCoder ABC290: G. Edge Elimination
10430 AtCoder ABC290: F. Maximum Diameter
10429 AtCoder ABC290: E. Make it Palindrome
10428 AtCoder ABC290: D. Marking
10427 AtCoder ABC290: C. Max MEX
10426 AtCoder ABC290: B. Qual B
10425 AtCoder ABC290: A. Contest Result
10424 AtCoder ABC289: Ex. Trio
10423 AtCoder ABC289: G. Shopping in AtCoder store
10422 AtCoder ABC289: F. Teleporter Takahashi
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