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Some Recent Works:

• USACO 2006 DEC #3(Silver): River HopscotchMarch 30, 2020
  Every year the cows hold an event featuring a peculiar version of hopscotch that involves carefully jumping from rock to rock in a river. The excitement takes place on a long, straight river with a rock at the start and another rock at the end, L units away from the start (1 <= L <=Continue reading “USACO 2006 DEC #3(Silver): River Hopscotch”
• USACO 2018 DEC #2 (Silver): Convention IIMarch 30, 2020
  Despite long delays in airport pickups, Farmer John’s convention for cows interested in eating grass has been going well so far. It has attracted cows from all over the world. The main event of the conference, however, is looking like it might cause Farmer John some further scheduling woes. A very small pasture on hisContinue reading “USACO 2018 DEC #2 (Silver): Convention II”
• USACO 2018 DEC #1 (Silver): ConventionMarch 30, 2020
  Farmer John is hosting a new bovine grass-eating convention at his farm! Cows from all over the world are arriving at the local airport to attend the convention and eat grass. Specifically, there are N cows arriving at the airport (1≤N≤10^5) and cow ii arrives at time Ti (0≤Ti≤10^9). Farmer John has arranged M (1≤M≤10^5) buses to transport the cows from the airport.Continue reading “USACO 2018 DEC #1 (Silver): Convention”
• USACO 2020 JAN #1 (Silver): Berry PickingMarch 30, 2020
  Bessie and her little sister Elsie are picking berries in Farmer John’s berry patch. Farmer John’s patch has exactly N berry trees (1≤N≤1000); tree i contains exactly Bi berries (1≤Bi≤1000). Bessie has exactly K baskets (1≤K≤1000, K even). Each basket can hold as many berries from a single tree as Bessie wants, but cannot contain berries from two different trees as their flavors willContinue reading “USACO 2020 JAN #1 (Silver): Berry Picking”
• USACO 2016 US Open #3 (Silver): Closing the FarmMarch 30, 2020
  Farmer John and his cows are planning to leave town for a long vacation, and so FJ wants to temporarily close down his farm to save money in the meantime. The farm consists of N barns connected with M bidirectional paths between some pairs of barns (1≤N, M≤3000). To shut the farm down, FJ plans to close one barnContinue reading “USACO 2016 US Open #3 (Silver): Closing the Farm”