USACO 2021 January Contest, Platinum Problem 1. Sum of Distances
USACO 2021 January Contest, Platinum Problem 1. Sum of Distances Bessie has a collection of connected, undirected graphs?G1,G2,…,GKG1,G2,…,GK?(2≤K≤5?1042≤K≤5?104). For each?1≤i≤K1≤i≤K,?GiGi?has exa...