#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c, d;
  cin >> a >> b >> c >> d;
  int maxn, minn;
  maxn = 0, minn = 150;
  for (int i = 0; i < b; i++) {
    int x;
    cin >> x;
    maxn = max(maxn, x);
    minn = min(minn, x);
  }
  if (maxn > d || minn < c) {
    cout << "Incorrect";
    return 0;
  }
  if (a - b == 1 && maxn < d && minn > c) {
    cout << "Incorrect";
    return 0;
  }
  cout << "Correct";
  return 0;
}
