#include "bits/stdc++.h"

using namespace std;

void solve(void)
{
	int n, a, b, i;
	string s;
	while(cin >> s)
	{
		cout << "Hello World!" << endl;
		/*
		cin >> n;
		cout << (n + 1) * n / 2 << endl;
		cin >> a >> b >> s;
		cout << a + b << ' ' << s << endl;
		cin >> n;
		for (int j = 1; j <= n; j++)
		{
			if (j % 15 == 0)
				cout << "FizzBuzz";
			else if (j % 3 == 0)
				cout << "Fizz";
			else if (j % 5 == 0)
				cout << "Buzz";
			else
				cout << j;
			cout << endl;
		}
		cin >> n;
		long ans = 0;
		while (n--)
		{
			long x;
			cin >> x;
			ans += x;
		}
		cout << ans << endl;
		*/
	}

}

int main(void)
{
	solve();
	//cout << "yui(*-v・)yui" << endl;
	return 0;
}