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)
23471 USACO 2016 US Open Contest, Silver: Diamond Collector
23470 USACO 2016 US Open Contest, Silver: Field Reduction
23469 USACO 2016 US Open Contest, Gold: 248
23468 USACO 2016 US Open Contest, Gold: Closing the Farm
23467 USACO 2016 US Open Contest, Gold: Splitting the Field
23466 USACO 2016 US Open Contest, Platinum: Landscaping
23465 USACO 2016 US Open Contest, Platinum: Bull in a China Shop
23464 USACO 2016 US Open Contest, Platinum: 262144
23463 USACO 2016 February Contest, Bronze: Load Balancing
23462 USACO 2016 February Contest, Bronze: Circular Barn
23461 USACO 2016 February Contest, Bronze: Milk Pails
23460 USACO 2016 February Contest, Silver: Milk Pails
23459 USACO 2016 February Contest, Silver: Load Balancing
23458 USACO 2016 February Contest, Silver: Circular Barn
23457 USACO 2016 February Contest, Gold: Fenced In
23456 USACO 2016 February Contest, Gold: Circular Barn Revisited
23455 USACO 2016 February Contest, Gold: Circular Barn
23454 USACO 2016 February Contest, Platinum: Circular Barn
23453 USACO 2016 February Contest, Platinum: Fenced In
23452 USACO 2016 February Contest, Platinum: Load Balancing
23451 USACO 2016 January Contest, Bronze: Mowing the Field
23450 USACO 2016 January Contest, Bronze: Angry Cows
23449 USACO 2016 January Contest, Bronze: Promotion Counting
23448 USACO 2016 January Contest, Silver: Build Gates
23447 USACO 2016 January Contest, Silver: Subsequences Summing to Sevens
23446 USACO 2016 January Contest, Silver: Angry Cows
23445 USACO 2016 January Contest, Gold: Lights Out
23444 USACO 2016 January Contest, Gold: Radio Contact
23443 USACO 2016 January Contest, Gold: Angry Cows
23442 USACO 2016 January Contest, Platinum: Lights Out
23441 USACO 2016 January Contest, Platinum: Mowing the Field
23440 USACO 2016 January Contest, Platinum: Fort Moo
23439 USACO 2016 December Contest, Bronze: The Cow-Signal
23438 USACO 2016 December Contest, Bronze: Block Game
23437 USACO 2016 December Contest, Bronze: Square Pasture
23436 USACO 2016 December Contest, Silver: Moocast
23435 USACO 2016 December Contest, Silver: Cities and States
23434 USACO 2016 December Contest, Silver: Counting Haybales
23433 USACO 2016 December Contest, Gold: Lasers and Mirrors
23432 USACO 2016 December Contest, Gold: Cow Checklist
23431 USACO 2016 December Contest, Gold: Moocast
23430 USACO 2016 December Contest, Platinum: Robotic Cow Herd
23429 USACO 2016 December Contest, Platinum: Team Building
23428 USACO 2016 December Contest, Platinum: Lots of Triangles
23427 USACO 2015 US Open, Bronze: Palindromic Paths (Bronze)
23426 USACO 2015 US Open, Bronze: Trapped in the Haybales (Bronze)
23425 USACO 2015 US Open, Bronze: Bessie Gets Even
23424 USACO 2015 US Open, Bronze: Moocryption
23423 USACO 2015 US Open, Silver: Bessie's Birthday Buffet
23422 USACO 2015 US Open, Silver: Trapped in the Haybales (Silver)
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