USACO 2021 February Contest, Silver Problem 2. Year of the Cow Farmer John's cows are excited to learn that Chinese New Year was recently celebrated, ushering in the year of the Ox, always a bovine...
USACO 2021 February Contest, Silver Problem 1. Comfortable Cows Farmer Nhoj's pasture can be regarded as a large 2D grid of square "cells" (picture a huge chessboard). Initially, the pasture is emp...
Final Results: USACO 2021 February Contest, Gold Key: * = Correct x = Wrong Answer (including possibly empty or missing output file) t = Timeout c = Didn't Compile ! = Run-time error or exceeded me...
USACO 2021 February Contest, Gold Problem 3. Count the Cows As is typical, Farmer John's cows have spread themselves out along his largest pasture, which can be regarded as a large 2D grid of squar...
USACO 2021 February Contest, Gold Problem 2. Modern Art 3 Having become bored with standard 2-dimensional artwork (and also frustrated at others copying her work), the great bovine artist Picowso h...
USACO 2021 February Contest, Gold Problem 1. Stone Game Bessie and Elsie are playing a game with NN (1≤N≤1051≤N≤105) piles of stones, where the ii-th pile has aiai stones for each 1≤i≤N1≤i≤N (1≤ai≤...
USACO 2021 February Contest, Platinum Problem 3. Counting Graphs Bessie has a connected, undirected graph GG with NN vertices labeled 1…N1…N and MM edges (2≤N≤102,N−1≤M≤N2+N22≤N≤102,N−1≤M≤N2+N2). G...
USACO 2021 February Contest, Platinum Problem 2. Minimizing Edges Bessie has a connected, undirected graph GG with NN vertices labeled 1…N1…N and MM edges (2≤N≤105,N−1≤M≤N2+N22≤N≤105,N−1≤M≤N2+N2). ...
USACO 2021 US Open, Platinum Problem 3. Balanced Subsets Farmer John's pasture can be regarded as a large 2D grid of square "cells" (picture a huge chessboard) labeled by the ordered pairs (i,j)(i,...
