这题好坑啊，害得我搬代码写[P5278](https://www.luogu.com.cn/problem/P5278)时大红大紫
by zyp123456 @ 2021-12-07 17:32:48
@[小粉兔](/user/10703) 正确输出 `yuanxing`，错误输出 `damushen`
by meyi @ 2022-08-19 21:24:36