200 68 200
68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 68 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 67 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 

（权值：先有 $67$ 个 $68$，然后 $65$ 个 $67$，最后 $68$ 个 $66$。）

Hack名单：

https://www.luogu.com.cn/blog/virus2017/solution-p1135
https://www.luogu.com.cn/blog/Venus/solution-p1135
https://www.luogu.com.cn/blog/user65534/solution-p1135(防抄袭不可取)
https://hermione-j-granger.blog.luogu.org/baogao-bfs-a(CE，加上vis数组可过)
https://www.luogu.com.cn/blog/rocon/solution-p1135(CE)
https://www.luogu.com.cn/blog/denghaoyu/solution-p1135
https://www.luogu.com.cn/blog/Turn-ed/solution-p1135
https://www.luogu.com.cn/blog/xingyu/solution-p1135(没RE，本地2s，没输出)
https://www.luogu.com.cn/blog/user28939/solution-p1135(对拍同学：我可真tm谢谢你)
https://www.luogu.com.cn/blog/user18245/solution-p1135