# coding=utf8

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

x = 0

for a in L : 

    p = 0

    y = 0

    for b in L :

        z = y + 1

            for c in L :

                if z<3:

                    s = L[x][y] * L[x][z] * 2

                    p = p + s

                    z+=1

                else:

                    break

            y+=1

    x+=1

    print (p)

这是我的，参考一下

我刚刚发现写的有问题，大家不要嘲笑