水仙花数是三位数，它的各位数字的立方和等于这个三位数本身，例如：371=33+73+13，

371就是一个水仙花数。找出所有水仙花数.-Narcissus is the three-digit number, the digits of its cube is equal to the three-digit itself, for example: 371 = 33+73+13, 371 is a few daffodils. To find out the number of all daffodils.