h, n = map(int, input().split())
d = [int(input()) for _ in range(n-1)]
d.append(h)
d.sort(reverse=True)
r = d.index(h)+1
if str(r)[-1] == "1":
    print(f"{r}st")
elif str(r)[-1] == "2":
    print(f"{r}nd")
elif str(r)[-1] == "3":
    print(f"{r}rd")
else:
    print(f"{r}th")