BZOJ3343: 教主的魔法

分块
每次修改覆盖块的话就加标记
否则暴力重建

时间垫底。。。

#include<cstdio>#include<cmath>#include<algorithm>#include<iostream>#include<cstring>using namespace std;#define ll long longchar c;inline void read(ll &a){a=0;do c=getchar();while(c<'0'||c>'9');while(c<='9'&&c>='0')a=(a<<3)+(a<<1)+c-'0',c=getchar();}ll Add[4001];ll Data[1000001];ll Block[1000002];ll    pl[1000002];ll Bg[4001],Ed[4001];ll Size,S;ll n,i,Q,j,k,l;ll B[4001][4001];ll Reset(ll Blo){    S+=Size;    ll *Con=&B[Blo][0];    *Con=0;    for(ll i=Bg[Blo];i<=Ed[Blo];i++)      B[Blo][++(*Con)]=Data[i];    sort(B[Blo]+1,B[Blo]+*Con+1);}ll M;inline ll Check(ll Blo){    ll mid,ans=10009,l=1,r=B[Blo][0];    while(l<=r)      {         mid=l+r>>1;         if(Add[Blo]+B[Blo][mid]>=M)ans=mid,r=mid-1;         else l=mid+1;       }    if(ans==10009)return 0;   return B[Blo][0]-ans+1;}int main(){   read(n);   Size=sqrt(n);   if(n>=1000)     Size*=6;   Bg[Block[1]=1]=1,pl[1]=1;   for(i=2;i<=n;i++)    if(pl[i-1]^Size)     {pl[i]=pl[i-1]+1,Block[i]=Block[i-1];}    else Bg[Block[i]=Block[i-1]+1]=i,Ed[Block[i]-1]=i-1,pl[i]=1;    pl[i]=1;   Ed[Block[i-1]]=i;   read(Q);   for(i=1;i<=n;i++)read(Data[i]);    for(i=1;i<=Block[n];i++)Reset(i);   while(Q--)    {    do c=getchar();while(c!='A'&&c!='M');      if(c=='M')         {           ll l,r,delta;read(l),read(r),read(delta);           for(i=l;Block[i]==Block[l]&&i<=r;i++)Data[i]+=delta;           if(Block[l]!=Block[r])           for(i=r;Block[i]==Block[r]&&i>=l;i--)Data[i]+=delta;           Reset(Block[l]);            if(Block[l]^Block[r])            Reset(Block[r]);           for(i=Block[l]+1;i<Block[r];i++)Add[i]+=delta;         }    else       {           ll l,r,ans=0;read(l),read(r),read(M);            for(i=l;Block[i]==Block[l]&&i<=r;i++)                 ans+=((Data[i]+Add[Block[i]])>=M?1:0);           if(Block[l]!=Block[r])           for(i=r;Block[i]==Block[r]&&i>=l;i--)                 ans+=((Data[i]+Add[Block[i]])>=M?1:0);           for(i=Block[l]+1;i<Block[r];i++)ans+=Check(i);         printf("%d\n",ans);         }   // printf("DeBug::%d\n",S);   }   return 0;}