#include <iostream>
using namespace std;

int main(){
    int one_hole = 0;
    int two_hole = 0;
    int len = 0;
    string n;
    cin >> n;
    len = n.length();
    for(int i = 0; i < len; ++i){
        if(n[i]=='0' || n[i]=='4' || n[i]=='6' || n[i]=='9'){ one_hole+=1; }
        else if(n[i]=='8'){ two_hole+=1; }
    }
    cout << len * 2 + 1 + one_hole * 1 + two_hole * 2 << endl;
    return 0;
}