import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        char[] arr = br.readLine().toCharArray();
        int[] counts = new int[]{1, 0, 0, 0, 1, 0, 1, 0, 2, 1};
        long total = 0;
        for (char c : arr) {
            total += counts[c - '0'];
        }
        System.out.println(Math.min(arr.length * 2 + total + 1, arr.length + (total + 1) * 2));
    }
}