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[] height = new int[n - 1];
    for(int i = 0; i < n - 1; i++) {
      height[i] = sc.nextInt();
    }
    Arrays.sort(height);
    int ord = n;
    for(int i = n - 2; i >= 0; i--) {
      if(height[i] < h) {
        ord = n - i - 1;
        break;
      }
    }
    String ans = "";
    if((ord % 10) == 1) {
      ans = ord + "st";
    } else if((ord % 10) == 2) {
      ans = ord + "nd";
    } else if((ord % 10) == 3) {
      ans = ord + "rd";
    } else {
      ans = ord + "th";
    }
    System.out.println(ans);
  }
}