import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int g = n % 10;
		int s = n / 10 % 10;
		int b = n / 100 % 10;
		int q = n / 1000 % 10;
		int w = n / 10000;
		if(g==5 || s==5 || b==5 || q==5 || w==5){
			int s1 = g + s + b + q + w;
			System.out.println(s1);
		}else{
			System.out.println(n);
		}
		sc.close();
	}

}
/**************************************************************
	Problem: 1659
	User: admin
	Language: Java
	Result: Accepted
	Time:1087 ms
	Memory:39824 kb
****************************************************************/