h, n = map(int, input().split())
a = sorted([int(input()) for _ in range(n - 1)] + [h], reverse=True)
res = a.index(h) + 1
if res % 10 == 1:
    print(str(res) + 'st')
elif res % 10 == 2:
    print(str(res) + 'nd')
elif res % 10 == 3:
    print(str(res) + 'rd')
else:
    print(str(res) + 'th')