def mul_matrix(m1,m2):
    l=len(m1)-1
    c=len(m2[0])-1
    m=[]
    for i in range (len(m1)):
        for j in range (len(m2[0])):
            m=[0]+m
    print(m)
    for i in range (len(m1)):
        it=0
        for j in range (len(m2[0])):
            it= m1[i][j]*m2[j][i] + it
        m[i][j]=it
    for i in range (len(m1)):
        itk=0
        for j in range (len(m2[0])):
            itk= m1[j][i]*m2[i][j] + itk
        m=m+[itk]
    return m