USACO 2022 US Open Contest, Platinum Problem 3. Up Down Subsequence Farmer John's NN cows (2≤N≤3⋅1052≤N≤3⋅105), conveniently numbered 1…N1…N as usual, have ordered themselves according to a permuta...
USACO 2022 US Open Contest, Platinum Problem 2. Hoof and Brain Given a directed graph with NN vertices and MM edges (2≤N≤1052≤N≤105, 1≤M≤2⋅1051≤M≤2⋅105), Farmer John's cows like to play the followi...
USACO 2022 US Open Contest, Platinum Problem 1. 262144 Revisited Bessie likes downloading games to play on her cell phone, even though she does find the small touch screen rather cumbersome to use ...
USACO 2022 February Contest, Bronze Problem 3. Blocks In an effort to improve her vocabulary, Bessie the cow has obtained a set of four wooden blocks, each one a cube with a letter of the alphabet ...
USACO 2022 February Contest, Bronze Problem 2. Photoshoot 2 In what seems to be a familiar occurrence, Farmer John is lining up his NN cows (1≤N≤1051≤N≤105), conveniently numbered 1…N1…N, for a pho...
USACO 2022 February Contest, Bronze Problem 1. Sleeping in Class Bessie the cow was excited to recently return to in-person learning! Unfortunately, her instructor, Farmer John, is a very boring l...
USACO 2022 February Contest, Silver Problem 3. Email Filing Farmer John has fallen behind on organizing his inbox. The way his screen is organized, there is a vertical list of folders on the left s...
USACO 2022 February Contest, Silver Problem 2. Robot Instructions Bessie is learning how to control a robot she has recently received as a gift. The robot begins at point (0,0)(0,0) on the coordina...
USACO 2022 February Contest, Silver Problem 1. Redistributing Gifts Farmer John has NN gifts labeled 1…N1…N for his NN cows, also labeled 1…N1…N (1≤N≤5001≤N≤500). Each cow has a wishlist, which is ...
