#include <iostream>

int main(void){
	int num[10] = {
		1, 0, 0, 0, 1, 0, 1, 0, 2, 1	
	};
	int n, count=1, digit=0;
	std::cin >> n;
	while (n!=0)
	{
		count += num[n % 10];
		n = n / 10;
		digit++;
	}
	std::cout << count + digit * 2 << std::endl;
	return 0;
}