摘要: 题意简述:给定一颗有$N(N include using namespace std; const int N=3010; struct fk{int to,nxt;}e[Nval[v])f[u]=1; } } int main(){ scanf("%d",&n); for(int i=1;i 阅读全文
posted @ 2019-04-22 17:32 努力进步的肥宅yxc 阅读(211) 评论(0) 推荐(0) 编辑