in

1
1
0 -5000 -5000

out

-5005000.0000

wrong out

0.0000

hack 原理下面应该给过了吧，就是没有判负数。

https://www.luogu.com.cn/blog/No-wonder/solution-p1883

https://www.luogu.com.cn/blog/user185/solution-p1883 WA

https://www.luogu.com.cn/blog/EnergyMaking/solution-p1883 RE

https://www.luogu.com.cn/blog/228486/ti-xie-p1883-han-shuo-post WA

https://www.luogu.com.cn/blog/user42688/solution-p1883 CE+疑似抄别人的

https://www.luogu.com.cn/blog/wlzs1432/solution-p1883 WA

有的没代码的我就去提交记录翻了。