用Warshall算法求二元关系的传递闭包。输入一个N*N的0、1矩阵M，将矩阵M作为二元关系的关系矩阵，用Warshall 算法求出A的传递闭包M，输出M。-Warshall algorithm is seeking to use the transitive closure of binary relations. Enter an N* N of the 0,1 matrix M, the matrix M as a binary relation, the relationship between the matrix A, with the Warshall algorithm for transitive closure find M, the output M.