using System;
using System.Collections.Generic;
using System.Linq;

class Solution
{
    static void Main()
    {
        var vals = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
        int h = vals[0];
        int n = vals[1];

        var hs = new int[n];
        hs[0] = h;
        for (int i = 1; i < n; i++)
        {
            hs[i] = int.Parse(Console.ReadLine());
        }

        var index = hs.OrderByDescending(i => i).ToList().FindIndex(i => i == h) + 1;
        var result = index.ToString();
        switch (index % 10)
        {
            case 1:
                result += "st";
                break;
            case 2:
                result += "nd";
                break;
            case 3:
                result += "rd";
                break;
            default:
                result += "th";
                break;
        }

        Console.WriteLine(result);
    }
}