#include<bits/stdc++.h> using namespace std; int main(){ int w,q,b,s,g,a,sum; cin>>a; w=a/10000; q=a/1000%10; b=a/100%10; s=a/10%10; g=a%10; sum=w+q+b+s+g; if(w5||q5||b5||s5||g==5)cout<<sum; else cout<<a; return 0; }