text: #include <bits/stdc++.h>
  #define forn(i, n) for (long long i = 0; i < (long long)(n); ++i)
  #define for1(i, n) for (long long i = 1; i <= (long long)(n); ++i)
  #define fore(i, l, r) for (long long i = (long long)(l); i <= (long long)(r); ++i)
  #define fordn(i, n) for (long long i = (long long)(n) - 1; i >= 0; --i)
  #define ford1(i, n) for (long long i = (long long)(n); i >= 1; --i)
  #define all(x) (x).begin(), (x).end()
  #define PI 3.141592653589793
  using namespace std;
  using ll = long long;
  using ld = long double;
  
  int main(){
      ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
      int n;
      cin >> n;
      if(n == 1){
          cout << "Hello World" << endl;
          return 0;
      }else{
          int a, b;
          cin >> a >> b;
          cout << a + b << endl;
      }
  }