//CodeForces 413A
1 #include "iostream"
2 #include "cstdio"
3 #include "cstring"
4 #include "algorithm"
5 #include "vector"
6 using namespace std;
7 int n, m, Min, Max;
8
9 int main()
10 {
11 int i;
12 scanf("%d%d%d%d", &n, &m, &Min, &Max);
13 bool MIN, MAX, OVERL;
14 MIN = MAX = 0;
15 OVERL = 0;
16 int ans;
17 for(i = 1; i <= m; ++i) {
18 scanf("%d", &ans);
19 if(ans == Min)
20 MIN = 1;
21 else if(ans == Max)
22 MAX = 1;
23 else if(ans < Min || ans > Max) {
24 OVERL = 1;
25 break;
26 }
27 }
28 if(OVERL)
29 printf("Incorrect
");
30 else {
31 n -= m;
32 if(!MIN)
33 --n;
34 if(!MAX)
35 --n;
36 if(n < 0)
37 printf("Incorrect
");
38 else
39 printf("Correct
");
40 }
41 }