# -*- coding: utf-8 -*-
h,n = map(int,input().split())
height = [0] * (n-1)
for i in range(n-1):
    height[i] = int(input())

ans = 0

height.sort()

for i in range(n-1):
    if height[i] > h:
        ans = n - i
        break
    if ans == 0:
        ans = 1

if ans % 10 == 1:
    print(str(ans) + "st")
elif ans % 10 == 2:
    print(str(ans) + "nd")
elif ans % 10 == 3:
    print(str(ans) + "rd")
else:
    print(str(ans) + "th")