from lib import *

data = open(0).readlines()

part_1 = True
if part_1:
    a = 0
    for line in data:
        l, w, h = list(map(int, line.split("x")))
        slack = min([l * w, w * h, h * l])
        a +=  (2*l*w + 2*w*h + 2*h*l + slack)
else: 
    a = 0
    for line in data:
        l, w, h = list(map(int, line.split("x")))
        sd = min([2 * (l + w), 2 * (w + h), 2 * (h + l)])
        a +=  sd + (l * w * h)

print(a)