Cod sursa(job #3325439)

Utilizator Matei_AndronacheMatei Andronache Matei_Andronache Data 25 noiembrie 2025 13:59:17
Problema Zoo Scor 30
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 1.03 kb
#include <bits/stdc++.h>
#define int long long
using namespace std;
ifstream fin ("zoo.in");
ofstream fout ("zoo.out");
map <int,map<int,int>> s;
void update(int px,int py,int x,int n)
{
    for (int i=px;i<=n;i+=(i&-i))
    {
        for (int j=py;j<=n;j+=(j&-j))
        {
            s[i][j]+=x;
        }
    }
}
int query(int px,int py)
{
    int sum=0;
    for (int i=px;i>0;i-=(i&-i))
    {
        for (int j=py;j>0;j-=(j&-j))
        {
            sum+=s[i][j];
        }
    }
    return sum;
}
signed main()
{
    int n;
    fin>>n;
    int x,y;
    for (int i=1;i<=n;i++)
    {
        fin>>x>>y;
        x+=2000000001;
        y+=2000000001;
        update(x,y,1,4000000001);
    }
    int m;
    fin>>m;
    int x1,y1,x2,y2;
    for (int i=1;i<=m;i++)
    {
        fin>>x1>>y1>>x2>>y2;
        x1+=2000000001;
        y1+=2000000001;
        x2+=2000000001;
        y2+=2000000001;
        fout<<query(x2,y2)-query(x2,y1-1)-query(x1-1,y2)+query(x1-1,y1-1)<<'\n';
    }
    return 0;
}