#include <bits/stdc++.h>
using namespace std;
int a, b, n, m, aa = 0, bb = 101, nn, t;
int main() {
  cin >> n >> m >> b >> a;
  nn = m;
  for (int i = 0; i < m; i++) {
    scanf("%d", &t);
    aa = max(aa, t);
    bb = min(bb, t);
  }
  if (bb > b) nn++;
  if (aa < a) nn++;
  if (bb < b || aa > a || nn > n)
    puts("Incorrect");
  else
    puts("Correct");
  return 0;
}
