import java.util.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner(System.in);
		int h = sc.nextInt();
		int n = sc.nextInt();
		int[] arr = new int[n - 1];
		for (int i = 0; i < n - 1; i++) {
		    arr[i] = sc.nextInt();
		}
		Arrays.sort(arr);
		int order = n;
		for (int i = 0; i < n - 1; i++) {
		    if (arr[n - 2 - i] < h) {
		        order = i + 1;
		        break;
		    }
		}
		String suf = "th";
		if (order % 10 == 1) {
		    suf = "st";
		} else if (order % 10 == 2) {
		    suf = "nd";
		} else if (order % 10 == 3) {
		    suf = "rd";
		}
		System.out.println(order + suf);
	}
}