#!/usr/bin/env python
total = 0

with open("inputd2.txt", "r") as f:
	for line in f:
		dimensions = [int(x) for x in line.split("x")]
		l = dimensions[0]
		w = dimensions[1]
		h = dimensions[2]

		lw = l * w
		wh = w * h
		hl = h * l

		smallest = wh
		if (lw < hl and lw < wh):
			smallest = lw
		elif (hl < wh):
			smallest = hl

		total += (2 * lw) + (2 * hl) + (2 * wh) + smallest

print(total)