h,n = map(int,input().split())
array = [h] + [int(input()) for i in range(n-1)]
array_s = list(sorted(array))[::-1]
result = int(str(array_s.index(h)+1)[-1])
if result==1:
    print("{}st".format(result))
elif result==2:
    print("{}nd".format(result))
elif result==3:
    print("{}rd".format(result))
else:
    print("{}th".format(result))