没有路径输出 `-1`
by InversionShadow @ 2023-06-18 09:52:43
@[HN_J003](/user/854987) [改了就 A 了](https://www.luogu.com.cn/record/112906309)
by InversionShadow @ 2023-06-18 09:54:02
AC了，感谢
by Deng_Rui_Song @ 2023-06-18 11:20:49