h, n = map(int, input().split())
l = [int(input()) for _ in range(n-1)]

l.append(h)
l = sorted(l)[::-1]

x = str(l.index(h) + 1)

if x[-1] == '1':
    print(x + 'st')
elif x[-1] == '2':
    print(x + 'nd')
elif x[-1] == '3':
    print(x + 'rd')
else:
    print(x + 'th')