#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, n, k) for (int i = (int)(k); i < (int)(n); i++)
#define repM(i, n, k) for (int i = (int)(k); i > (int)(n); i--)
#define all(v) v.begin(), v.end()
using ll = long long;

int main(){
    cout << "Hello World!";
}