#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; i++)
using namespace std;
using ll = long long;

int main() {
  int N;
  cin >> N;

  if (N == 1)
    cout << "Hello World" << endl;
  else {
    int A, B;
    cin >> A >> B;
    cout << A + B << endl;
  }
  return 0;
}
#include <iostream>
#include <string>

using namespace std;

int const NMAX = 100;
char v[1 + NMAX][1 + NMAX];

int main() {

  int n, m;
  cin >> n >> m;
  cout << max(n * m, max(n - m, n + m));
  return 0;
}
