H, N = map(int, input().split())
T = [input().rstrip() for i in range(N-1)]
T = [int(i) for i in T]
T.append(H)
T.sort(reverse=True)
c = (T.index(H) + 1) % 10
if c == 1:
    print(str(c) + "st")
elif c == 2:
    print(str(c) + "nd")
elif c == 3:
    print(str(c) + "rd")
else:
    print(str(c) + "th")