摘要:Hall定理 二分图 $X Y$,设 $|X| include include define lo (now 1; BuildTree(lo,l,mid); BuildTree(ro,mid+1,r); pushup(now); } void updataPoint(int now,int pla, 阅读全文
posted @ 2018-07-11 18:55 ws_zzy 阅读(116) 评论(0) 推荐(0) 编辑