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

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