从小到大选边生成树的时候,怎么只看前n-1条边?
by love好o @ 2023-09-16 19:27:57
改了就过了
by love好o @ 2023-09-16 19:29:34
@[love好o](/user/129342) 哦懂了懂了,蟹蟹大佬
by BlinkSwiftie @ 2023-09-21 22:50:29