import java.util.Arrays;
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int x = sc.nextInt();
        int n[] = new int[x+1];
        n[x] = a;
        for (int i = 0; x==i; i++) {
            n[i] = sc.nextInt();
        }

        Arrays.sort(n);
        int an = Arrays.binarySearch(n, x);

        if (an == 0) System.out.println(1+"st");
        else if(an == 1) System.out.println(2+"nd");
        else if(an == 2) System.out.println(3+"rd");
        else System.out.println((an+1)+"th");
    }
}