数列的递推公式为:arr[i]=arr[i-2]-arr[i-1]。
你需要输出数列中的第n个数。测试样例数值不超过int,并且不会数组也可以写出来哟!!!
![](/upload/image/20211109/20211109193215_52366.jpg)
5
1 1
-1
Anything about this OnlineJudge, Please Contact Administrator.
Click add QQ
OJ system based on HUSTOJ Project , UI based on Twitter Bootstrap
Copyright 2016 ACM算法攻关部