L = [[1,2,3], [5, 3, 2], [7,3,2]]

N=3

s=0

if N>=1:

    for cube in L:

        length = cube[0]

        width = cube[1]

        height = cube[2]

        result = length * width * 2 + width * height * 2 + length * height * 2

        print(result)

        s=s+result

        N=N-1

    print(s)