标签？？都用不着

P4413 [COCI2006-2007#2] R2

你很强，你知道为什么吗
by BMTXLRC @ 2022-05-28 22:22:49

![](https://cdn.luogu.com.cn/upload/image_hosting/vwks5mbx.png)
by r_2 @ 2022-05-28 22:25:41

Orz
by 川寰boy @ 2022-05-28 22:26:19

![](https://cdn.luogu.com.cn/upload/image_hosting/vwks5mbx.png)
by 100kt_WNW @ 2022-05-28 22:26:26

@[王叶尘WYC9138](/user/541634) 已删除不恰当标签
by 小粉兔 @ 2022-05-28 22:28:01

竟然还得到了处理![](//图.tk/k)
by Yusani_huh @ 2022-05-28 22:39:26

@[BMTXLRC](/user/380579) 我自己推出来的 s=(r1+r2)/2 s=r1/2+r2/2 s-r1/2=r2/2 2*(s-r1/2)=r2
by littlebug @ 2022-05-28 22:42:31

@[王叶尘WYC9138](/user/541634) 哇！您真厉害！%%%！You AK IOI ! ![](//图.tk/gg!25)![](//图.tk/gh!25)![](//图.tk/ga!25)
by _Ad_Astra_ @ 2022-05-28 22:50:33