total = 0
with open("./input", "r") as f:
    file = f.read()
inputs = file.split("\n")
for i in range(len(inputs)-1):
    sides = inputs[i].split("x")
    smallestside = 1000
    for j in range(len(sides)):
        sides[j] = int(sides[j].replace("x", ""))
    areas = [sides[0]*sides[1], sides[1]*sides[2], sides[2]*sides[0]]
    for j in range(len(areas)):
        if areas[j] < smallestside:
            smallestside = areas[j]
    print(sides)
    print(smallestside)
    total += 2*sides[0]*sides[1] + 2*sides[1]*sides[2] + 2*sides[2]*sides[0] + smallestside

print(total)