An integer is given in each input line. You may assume that each integer is even, and is greater than or equal to 4 and less than 2^15. The end of the input is indicated by a number 0. Each output line should contain an integer number. No other characters should appear in the output. Time limit: 1 Seconds 那个高手指点一下，应该如何才能做好！ 小弟在此谢谢了~

那这个算是什么呀？
哪个高手帮我做做看
我做不来哦

kaikai
你能解决这个问题吗？