H, N = input().split(' ')
nama_height, member_num = int(H), int(N)

heights = [int(input()) for _ in range(member_num - 1)]
rank = member_num - sum([1 for height in heights if nama_height > height])

suffix = ['st', 'nd', 'rd'][rank - 1] if rank < 4 else 'th'
print(str(rank) + suffix)