Dandn文件给出了输入参数的名称及格式，即在调用prim前先输入邻接矩阵D和节点个数n输入prim得到两行的矩阵T,将上下两行数字对应的节点相连即可-Dandn file gives the name and format of the input parameters, namely, the input before calling the prim adjacency matrix D and the number of nodes n prim get two lines of the