import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int h = scan.nextInt();
		int N = scan.nextInt();
		int []H = new int[N - 1];
		for(int i = 0; i < N - 1; i++) {
			H[i] = scan.nextInt();
		}
		scan.close();
		Arrays.sort(H);
		for(int i = N - 2; i >= 0; i--){
			if(h >= H[i]) {
				String k = Integer.toString(N - i - 1);
				int ans = N - i - 1;
				int l = k.length();
				if(k.charAt(l - 1) == '1') {
					System.out.println(ans + "st");
					break;
				}else if(k.charAt(l - 1) == '2') {
					System.out.println(ans + "nd");
					break;
				}else if(k.charAt(l - 1) == '3') {
					System.out.println(ans + "rd");
					break;
				}else {
					System.out.println(ans + "th");
					break;
				}
			}
		}
		if(h < H[0]) {
			System.out.println(N + "th");
		}
	}
}