#include <iostream>
using namespace std;

int main()
{
   cout << "Hello World\n";
	int x = 50;
    int y = 12;
    
    cout << x / y << endl;
    
    cout << (float) (x / y) << endl;
    
    cout << (double) (x / y) << endl;
    
    cout << (double) x / (double) y << endl;
    
    return 0;
}