求助！
by FCB_1899 @ 2021-02-26 09:53:25
@[liuxingjian](/user/209561) `u.x=u.y=1;`应该是起点吧，输入的
by 王熙文 @ 2021-02-26 10:04:42
楼上正解
by AuCloud @ 2021-02-26 10:09:36
@[王熙文](/user/353688) @[AuCloud](/user/75954) 谢谢，AC了，~~顺便~~ %%%stO wxw
by FCB_1899 @ 2021-02-26 10:10:52