@[shenbairui](/user/770322) dfs 函数返回值改为 void
by zjpwdyf @ 2024-02-26 20:41:01
`dfs` 要么返回值，要么定义为 `void dfs(int, int)`，否则是 ub
by 日居月诸 @ 2024-02-26 20:44:23
谢谢@[zjpwdyf](/user/807826) @[日居月诸](/user/73032)
by shenbairui @ 2024-02-26 20:49:29