#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int arr[n];
  for (int i = 0; i < n; ++i) {
    cin >> arr[i];
  }
  for (int j = 0; j < n; ++j) {
    if (arr[j] == 0)
      if (j == (n - 1))
        cout << "EASY" << endl;
      else
        continue;
    else {
      cout << "HARD" << endl;
      break;
    }
  }
  return 0;
};
