#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  long long a, b, c, d;
  cin >> a >> b >> c >> d;
  vector<long long> v(b);
  for (long long i = 0; i < b; i++) cin >> v[i];
  long long flag4 = 0, flag2 = 0, flag3 = 0, county = 0, flag = 0;
  for (long long i = 0; i < b; i++) {
    if (a - b == 1) {
      if (v[i] == c || v[i] == d) flag2 = 1;
    }
    if (a - b == 0) {
      if (v[i] == c) flag3 = 1;
      if (v[i] == d) flag4 = 1;
    }
  }
  for (long long i = 0; i < b; i++) {
    if (a <= 2) {
      if (v[i] == c || v[i] == d)
        flag = 1;
      else
        flag = 0;
    } else {
      if (v[i] >= c && v[i] <= d) county++;
    }
  }
  if (a - b == 1) {
    if ((county == b || flag == 1) && flag2 == 1)
      cout << "Correct" << '\n';
    else
      cout << "Incorrect" << '\n';
  } else if (a == b) {
    if ((county == b || flag == 1) && flag3 == 1 & flag4 == 1)
      cout << "Correct" << '\n';
    else
      cout << "Incorrect" << '\n';
  } else {
    if (county == b || flag == 1)
      cout << "Correct" << '\n';
    else
      cout << "Incorrect" << '\n';
  }
  return 0;
}
