//Coded By Vishal Mourya - The Legendary Coder
#include<bits/stdc++.h>
#define ll long long int
#define vec vector<ll>
#define f(var,a,b) for(ll var = a ; var < b ; var++ )
#define fr(var,a,b) for(ll var = a ; var > b ; var-- )
#define fasthoja ios_base::sync_with_stdio(false); cin.tie(NULL);
using namespace std;
int main(void){
    fasthoja;
    string s; cin >> s;
    cout << "Hello World!\n";
    return 0;
}