import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String S = sc.next();
        int ans = 2+S.length();
        for(int i=0; i<S.length(); i++){
            ans+=function(S,i);
        }
        System.out.println(ans);
    }
    static int function(String S, int k){
        char c = S.charAt(k);
        if(c=='8'){
            return 2;
        }else if(c=='0'||c=='4'||c=='6'||c=='9'){
            return 1;
        }else{
            return 0;
        }
    }
}