h, N = map(int, input().split())
H = [int(input()) for i in range(N - 1)]
from bisect import bisect
x = N - bisect(sorted(H), h)
if str(x)[-1] == "1":
    print(str(x) + "st")
elif str(x)[-1] == "2":
    print(str(x) + "nd")
elif str(x)[-1] == "3":
    print(str(x) + "rd")
else:
    print(str(x) + "th")