qndmx
by qqqqq111 @ 2021-06-06 09:53:11
@[SIXIANG](/user/298549) `for(int p = Now[u]; p; p = gra[p].next)`-> `for(int p = Now[u]; p&&res; p = gra[p].next)`
by UltiMadow @ 2021-06-06 09:55:28
@[UltiMadow](/user/65681) 谢谢！qwq
by SIXIANG32 @ 2021-06-06 10:00:10