#include <iostream>
#include <string>
 
using namespace std;
 
template <typename T> T square(T v) { return v*v; }
int f(int v) { return square(v); }
double f(double v) { return square(v); }
 
class Shit
{
 
};
 
int main()
{
 
cout << f(4) << endl;
cout << f(5.7) << endl;

return 0;
}