D = ['st', 'nd', 'rd'] + ['th']*6

H, N = map(int, input().split())

L = [H]
for _ in range(N-1):
    L += [int(input())]
L = sorted(L)[::-1]

X = str(L.index(H)+1)
Y = int(X[-1])
print(X + D[Y-1])