#include<bits/stdc++.h> using namespace std; int main() { int n,g,s,b,q,w,nn; cin>>n; nn = 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<<nn; } }