aoc2017day02-2

import sys

def doit(input):
    rows = input.strip().split("\n")
    sum = 0
    for r in rows:
        vals = list(map(int,r.strip().split()))
        for i in range(len(vals)):
            for j in range(len(vals)):
                if j <= i: continue
                if vals[i] % vals[j] == 0:
                    #print(vals[i], vals[j])
                    sum += int(vals[i] / vals[j])
                if vals[j] % vals[i] == 0:
                    #print(vals[j], vals[i])
                    sum += int(vals[j] / vals[i])
    return "%d" % sum

input = sys.stdin.read()
print(doit(input))