A,a,B,b=[ ]
print("...")
size_of_matrix_1r=int(input())
size_of_matrix_1c=int(input())
print("...")
size_of_matrix_1r
size_of_matrix_1c
if(size_of_matrix_1c!=size_of_matrix2r):
    print("Error")
    try:
        while(len(a)!=size_1c):
            for i in range (size_1r):
                a=[int(x) for x in input()split()]
                if len( )!=size_1c:
                    print("...")
                    A.append
    except IndexError:
        pass
if(size_of_matrix_1c!=size_of_matrix2r):
    print("Error")
    try:
        while(len(a)!=size_1c):
            for i in range (size_1r):
                a=[int(x) for x in input()split()]
                if len( )!=size_1c:
                    print("...")
                    A.append
    except IndexError:
        pass

result=[[0 for x in range(size_2c)] for i in range (1r)]
for i in range (len(A)):
    for j in range (len(B[0])):
        for k in range (len(B)):
            try:
                result[i][j]+=A[i][j]*B[k][j]
            except IndexError:
                pass