#include <bits/stdc++.h>
using namespace std;


int main(){
	int n,g,s,b,q,w;
	cin>>n;
	w = n / 10000;
	q = n / 1000 % 10;
	b = n / 100 % 10;
	s = n / 10 % 10;
	g = n % 10;
	
	if(w == 5 || q == 5 || b == 5 || s == 5 || g == 5){
		cout<<w+q+b+s+g;
	}else{
		cout<<n;
	}
}
/**************************************************************
	Problem: 1659
	User: admin
	Language: C++
	Result: Accepted
	Time:22 ms
	Memory:2072 kb
****************************************************************/