#include<iostream>
using namespace std;


template<typename R,typename T> R sum(T *beg,T *end) { 
  R total = R(); 
  while(beg != end ) { 
    total += *beg; beg++; 
  } 
  return total; 
}


main() {
char name[]="@ @ @";
int length=strlen(name);

 cout<<sum<int>(name,&name[length])<<endl;
}