#include <bits/stdc++.h>
using namespace std;

typedef long long ll;	

// check if test cases are mentioned or not
void solve() {
	string s;
	cin>>s;
	
	cout<<"Hello World!"<<endl;
	
}

int32_t main() {    
    ios::sync_with_stdio(false);
    cin.tie(0);

    int T = 1;
    // cin >> T;
    while(T--) {
        solve();
    }
    return 0;
}