LOJ#6278. 数列分块入门 2

4
1 2 2 3
0 1 3 1
1 1 3 2
1 1 4 1
1 2 3 2

3
0
2

#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<vector>
using namespace std;
const int MAXN=1e6+10;
const int INF=1e8+10;
inline char nc()
{
    static char buf[MAXN],*p1=buf,*p2=buf;
    return p1==p2&&(p2=(p1=buf)+fread(buf,1,MAXN,stdin),p1==p2)?EOF:*p1++;
}
inline int read()
{
    char c=nc();int x=0,f=1;
    while(c<'0'||c>'9'){if(c=='-')f=-1;c=nc();}
    while(c>='0'&&c<='9'){x=x*10+c-'0';c=nc();}
    return x*f;
}
vector<int>v[1001];//用vector储存分块后块内的有序表
int block,L[MAXN],R[MAXN],a[MAXN],tag[MAXN],belong[MAXN],N;
void Sort(int p)
{
    v[p].clear();
    for(int i=L[p*block];i<=min(R[p*block],N);i++)
        v[p].push_back(a[i]);
    sort(v[p].begin(),v[p].end());
}
void IntervalAdd(int l,int r,int val)
{
    for(int i=l;i<=min(r,R[l]);i++) a[i]+=val;
    Sort(belong[l]);
    if(belong[l]!=belong[r])
    {
        for(int i=L[r];i<=r;i++)     a[i]+=val;
        Sort(belong[r]);
    }
    for(int i=belong[l]+1;i<=belong[r]-1;i++) tag[i]+=val;    
}
int Query(int l,int r,int val)
{
    int ans=0;
    for(int i=l;i<=min(r,R[l]);i++) 
        if(a[i]+tag[belong[l]]<val) ans++;
    if(belong[l]!=belong[r])
        for(int i=L[r];i<=r;i++)
            if(a[i]+tag[belong[r]]<val) ans++;
    for(int i=belong[l]+1;i<=belong[r]-1;i++)
    {
        int x=val-tag[i];
        ans+=lower_bound(v[i].begin(),v[i].end(),x)-v[i].begin();
    }
    return ans;
}
int main()
{
    #ifdef WIN32
    freopen("a.in","r",stdin);
    freopen("b.out","w",stdout);
    #else
    #endif
    N=read();block=sqrt(N);
    for(int i=1;i<=N;i++) a[i]=read();
    for(int i=1;i<=N;i++) belong[i]=(i-1)/block+1,L[i]=(belong[i]-1)*block+1,R[i]=belong[i]*block;
    for(int i=1;i<=N;i++) v[belong[i]].push_back(a[i]);
    for(int i=1;i<=belong[N];i++) Sort(i);
    for(int i=1;i<=N;i++)
    {
        int opt=read(),l=read(),r=read(),c=read();
        if(opt==0) IntervalAdd(l,r,c);
        else        printf("%d\n",Query(l,r,c*c));
    }
    return 0;
}