import bisect
H,N = map(int,input().split())
H_list = [int(input()) for _ in range(N-1)]
H_list.sort()
n = N - bisect.bisect(H_list,H)

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

print(ans)