召唤 @[Loveti](/user/53807)
by George1123 @ 2019-11-12 08:01:41
因为您巨 stO wzc Orz
by BabyBenzene @ 2019-11-12 08:02:32
召唤@[fyy66666](/user/101800)
召唤@[SegmentTree](/user/118308)
by George1123 @ 2019-11-12 08:02:50
top=1吧？
有没有初始化
by Thaumaturge @ 2019-11-12 08:06:18
@[♗Wendigo♝](/user/118365)
by Thaumaturge @ 2019-11-12 08:06:26
@[中美两开花](/user/55357) top为何要等于1？
这是边的编号，
中间用++top;
所以边的编号还是1-2*n-2
by George1123 @ 2019-11-12 08:07:34
所以边的编号还是$1$~$2\times n-2$
by George1123 @ 2019-11-12 08:08:06
@[♗Wendigo♝](/user/118365) 就是这里的问题
by Thaumaturge @ 2019-11-12 08:09:08
@[中美两开花](/user/55357) whywhywhy
by George1123 @ 2019-11-12 08:09:31
召唤@[_DXL_](/user/98618)
by George1123 @ 2019-11-12 08:09:53