https://www.luogu.com.cn/problem/U313452 （其实就是两组极限数据）

https://www.luogu.com.cn/blog/9355-064-28/solution-p3740 https://www.luogu.com.cn/record/115416330

https://www.luogu.com.cn/blog/zhangdadingAk/solution-p3740 https://www.luogu.com.cn/record/115417547

https://www.luogu.com.cn/blog/attack/solution-p3740 https://www.luogu.com.cn/record/115417871

https://www.luogu.com.cn/blog/hyblog/solution-p3740 https://www.luogu.com.cn/record/115418372

https://www.luogu.com.cn/blog/beyondlimits/solution-p3740 https://www.luogu.com.cn/record/115418768

https://www.luogu.com.cn/blog/user55412/solution-p3740 https://www.luogu.com.cn/record/115418951

https://www.luogu.com.cn/blog/happyforever/solution-p3740 https://www.luogu.com.cn/record/115419142

https://www.luogu.com.cn/blog/gjc/solution-p3740 https://www.luogu.com.cn/record/115419343

https://www.luogu.com.cn/blog/ReturnSir/solution-p3740 https://www.luogu.com.cn/record/115419712