#include <stdio.h>
#include <iostream>
using namespace std;
int main(void){
    string s;
    cin>>s;
    int num[] = {1,0,0,0,1,0,1,0,2,1};
    int cnt = 0;
    for(int i=0;i<s.size();i++){
        cnt += num[s[i]-'0'];
    }
    printf("%d\n",min(cnt+1+s.size()*2,(cnt+1)*2+s.size()));
}