[神奇啊](https://www.luogu.com.cn/record/105174030)
by Pandingding @ 2023-03-19 12:21:12
@[Pandingding](/user/722468) 好像是说敌人不能合并否则查询时会判断为朋友。（个人拙见）
by czh1017 @ 2023-03-19 16:10:45
@[czh1017](/user/780277) 啊对
by Pandingding @ 2023-03-20 20:23:39