#include <iostream>
using namespace std;
class cls {
static int x;
public:
cls(int i = 1) { x = i; }
cls f(cls a) { return x + a.x; }
static int g() { return f() / 2; }
};
int cls::x = 7;
int main()
{
cls ob;
cout << cls::g();
return 0;
}