USACO 2021 January Contest, Platinum Problem 2. Minimum Cost Paths
USACO 2021 January Contest, Platinum Problem 2. Minimum Cost Paths Farmer John's pasture can be regarded as an N×MN×M (2≤N≤1092≤N≤109, 2≤M≤2⋅1052≤M≤2⋅105) 2D grid of square "cells" (picture a huge ...