对了输出是
```
2
```
by fzj2007 @ 2020-08-23 10:13:14
我被卡了/fad
by kradcigam @ 2020-08-23 10:29:05
@[chen_zhe](/user/8457)
by Spasmodic @ 2020-08-23 10:36:32
网络瘤狂喜
by 绝顶我为峰 @ 2020-08-23 11:03:36
@[绝顶我为峰](/user/85682) 因为P1231和P2891都卡了匈牙利,然后和这题没什么区别,所以顺手就造了一组,然后真的卡了/jk
by fzj2007 @ 2020-08-23 11:06:55
@[fzj2007](/user/172370) /fad/fad/fad
by 绝顶我为峰 @ 2020-08-23 11:08:38
再来一个 ? @[一扶苏一](/user/65363)
by fzj2007 @ 2020-08-23 12:13:44