#include <iostream>
#include <string>
using namespace std;

string s;

int main()
{
	cin >> s;
	long ans = 0;
	for (int i = 0; i < s.length(); i++) {
		if (s[i] == '1' || '2' || '3' || '5' || '7') ans += 2;
		else if (s[i] == '0' || '4' || '6' || '9')ans += 3;
		else if (s[i] == '8')ans += 4;
	}
	ans++;
	cout << ans << endl;
    return 0;
}