[请](https://www.luogu.com.cn/problem/P3978)
by AsunderSquall @ 2020-11-28 21:42:30
%楼上奆佬
by yuzh2005 @ 2020-11-28 21:49:11
@[我知道了王子](/user/70132) 不是，说老实话，这个题用小奥方法确实封顶绿题
by PrincessQi @ 2020-11-28 21:50:03
话说我当时是怎么过这道题的啊
~~好像是抄题解的~~
by AsunderSquall @ 2020-11-28 21:51:15
为啥这是紫题？
P1239才是个黄，这题就是个绿题吧。
by chengxx @ 2020-12-25 20:08:37