摘要：
#include#include#include#includeusing namespace std;#define maxn 3000000#define maxm 200001struct node{int l,r,s,a,b;}a[maxn];struct P{int x,y;bool operator>1;a[k].l=build(l,mid);a[k].r=build(mid+1,r);return k;}int change(int p,int x,int w){int k=++tot;a[k].a=a[p].a,a[k].b=a[p].b,a[k].l=a[p].l,a[ 阅读全文