def recprism_area(l, w, h):
    return 2*l*w + 2*w*h + 2*h*l

def smallest_side(l, w, h):
    return min(l*w, w*h, h*l)

def ribbon_wrap(l, w, h):
    di = [l, w, h]
    stmin = min(di)
    di.remove(stmin)
    ndmin = min(di)
    return 2*stmin + 2*ndmin

def ribbon_bow(l, w, h):
    return l*w*h

order = 0
with open("input") as f:
    for line in [l.strip() for l in f.readlines()]:
        di = list(map(int, line.split("x")))
        order += ribbon_wrap(*di) + ribbon_bow(*di)
print(order)