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