h, n = map(int, input().split())
data = [h]
for i in range(n-1):
    data.append(int(input()))
data.sort(reverse=True)
m = data.index(h) + 1
i = m%10
if i == 1:
    print("%dst" % i)
elif i == 2:
    print("%dnd" % i)
elif i == 3:
    print("%drd" % i)
else:
    print("%dth" % i)