题面
题解
不难看出每个点的大小为行列限制中较小的那一个(因为数据保证有解)
对于行的每个限制,能取到的个数是列里限制大于等于它的数的个数,同理,对于列是行里大于它的个数(这里没有等于,为了避免重复计算) 于是可以对于行列分别开权值线段树,修改的时候只要把对应的贡献改一下就好了//minamoto#include#define R register#define ll long long#define fp(i,a,b) for(R int i=a,I=b+1;i I;--i)#define go(u) for(int i=head[u],v=e[i].v;i;i=e[i].nx,v=e[i].v)template inline bool cmax(T&a,const T&b){return a '9'||ch<'0')(ch=='-')&&(f=-1); for(res=ch-'0';(ch=getc())>='0'&&ch<='9';res=res*10+ch-'0'); return res*f;}char sr[1<<21],z[20];int C=-1,Z=0;inline void Ot(){fwrite(sr,1,C+1,stdout),C=-1;}void print(R ll x){ if(C>1<<20)Ot();if(x<0)sr[++C]='-',x=-x; while(z[++Z]=x%10+48,x/=10); while(sr[++C]=z[Z],--Z);sr[++C]='\n';}const int N=1e5+5;struct change{int op,pos,x;}c[N];ll res;int n,m,a[N],b[N],aa[N],bb[N],op,pos,x,lim;struct seg{ struct node{int ls,rs,cnt;ll sum;}t[N<<5]; int rt,tot; void ins(int &p,int l,int r,int x,int ty){ if(!p)p=++tot;t[p].cnt+=ty,t[p].sum+=x*ty; if(l==r)return;int mid=(l+r)>>1; x<=mid?ins(t[p].ls,l,mid,x,ty):ins(t[p].rs,mid+1,r,x,ty); } int q_cnt(int p,int l,int r,int ql,int qr){ if(!p)return 0;if(ql<=l&&qr>=r)return t[p].cnt; int mid=(l+r)>>1,res=0; if(ql<=mid)res+=q_cnt(t[p].ls,l,mid,ql,qr); if(qr>mid)res+=q_cnt(t[p].rs,mid+1,r,ql,qr); return res; } ll q_sum(int p,int l,int r,int ql,int qr){ if(!p)return 0;if(ql<=l&&qr>=r)return t[p].sum; int mid=(l+r)>>1;ll res=0; if(ql<=mid)res+=q_sum(t[p].ls,l,mid,ql,qr); if(qr>mid)res+=q_sum(t[p].rs,mid+1,r,ql,qr); return res; }}A,B;int main(){ freopen("graph.in","r",stdin); freopen("graph.out","w",stdout); n=read(); fp(i,1,n)aa[i]=a[i]=read(),cmax(lim,a[i]); fp(i,1,n)bb[i]=b[i]=read(),cmax(lim,b[i]); m=read(); fp(i,1,m)c[i].op=read(),c[i].pos=read(),c[i].x=read(),cmax(lim,c[i].x); sort(aa+1,aa+1+n),sort(bb+1,bb+1+n); for(R int i=1,j=1;i<=n;++i){ while(j<=n&&aa[i]>bb[j])++j; res+=1ll*aa[i]*(n-j+1); }for(R int i=1,j=1;i<=n;++i){ while(j<=n&&bb[i]>=aa[j])++j; res+=1ll*bb[i]*(n-j+1); }print(res); fp(i,1,n)A.ins(A.rt,0,lim,a[i],1); fp(i,1,n)B.ins(B.rt,0,lim,b[i],1); fp(i,1,m){ op=c[i].op,pos=c[i].pos,x=c[i].x; if(op==0){ res-=1ll*B.q_cnt(B.rt,0,lim,a[pos],lim)*a[pos]; if(a[pos]>0)res-=B.q_sum(B.rt,0,lim,0,a[pos]-1); A.ins(A.rt,0,lim,a[pos],-1); a[pos]=x; A.ins(A.rt,0,lim,a[pos],1); res+=1ll*B.q_cnt(B.rt,0,lim,a[pos],lim)*a[pos]; if(a[pos]>0)res+=B.q_sum(B.rt,0,lim,0,a[pos]-1); }else{ if(b[pos]