import os

matrix1_name = "matrix1.txt"
matrix2_name = "matrix2.txt"

def get_matrix_from_file(file_name):
    if not os.path.exists(file_name):
        print("cannot find file")
        return -1

    f = open(file_name,'r')
    l = [map(int, line.split(' ')) for line in f]
    return l

def multiply_matrix(A,B):



    #return C

if __name__ == "__main__":
   print(get_matrix_from_file(matrix1_name))
   print(get_matrix_from_file(matrix2_name))