#!/usr/bin/env ruby

def findpair(nums)
  (0...nums.length).each do |i|
    (0...nums.length).each do |j|
      next if j == i
      pair = [nums[i], nums[j]]
      return pair if pair.max % pair.min == 0
    end
  end
end

cs = 0

input = $stdin.readlines.map(&:chomp)

input.each do |line|
  nums = line.split.map(&:to_i)
  pair = findpair(nums)
  cs += pair.max / pair.min
end

puts cs