总是有那么几个点应该输出YES,但它输出了NO,构造也构造不出来。[https://www.luogu.com.cn/record/35142315](评测结果)
by 云岁月书 @ 2020-07-14 16:47:34
[评测结果](https://www.luogu.com.cn/record/35142315)
by 云岁月书 @ 2020-07-14 16:48:02