def ascan; gets.split.map(&:to_i);end

fz = ["FizzBuzz",1,2,"Fizz",4,"Buzz","Fizz",7,8,"Fizz","Buzz",11,"Fizz",13,14]

p ascan.map{|x| (x%3)*(x%5)==0 ? fz[x%15] : x.to_s}.map(&:size).reduce(:+)