Tug of War A tug of war is to be arranged at the local office picnic. For the tug of war, the picnickers must be divided into two teams. Each person must be on one team or the other; the number of people on the two teams must not differ by more than

数据结构之普里姆算法最小生成树（图的相关应用）(data structure of minimum spanning tree-using Prim(application og graph))