h, n = map(int, input().split())

a = [int(input()) for i in range(n-1)]
a.append(h)
a.sort(reverse=True)
ret = a.index(h)+1
r = ret % 10
if r == 1:
    print("{}st".format(ret))
elif r == 2:
    print("{}nd".format(ret))
elif r == 3:
    print("{}rd".format(ret))
else:
    print("{}th".format(ret))