[线段树] hdu 3255 Farming#求体积并

/**
[线段树] hdu 3255 Farming#求体积并
扫描水平面，每次用求面积并的方法求每个水平面的面积并，累加统计
*/
#include <stdio.h>
#include <string.h>
#include <algorithm>

using namespace std;

#define N 66666
#define L(id) (id << 1)
#define R(id) (id << 1 | 1)
int n,m,pri[N];
int dy[N],cnt;
struct _st
{
    int l,r,sum,cnt;
    int mid()
    {
        return (l + r) >> 1;
    }
}st[N<<2];

struct _cube
{
    int x1,y1,x2,y2,h;
    void input()
    {
        scanf("%d%d%d%d%d",&x1,&y1,&x2,&y2,&h);
        dy[cnt++] = y1;
        dy[cnt++] = y2;
        h = pri[h];
    }
}cube[N];
struct _seg
{
    int x,y1,y2,flag;
    _seg(int a = 0,int b = 0,int c = 0,int d = 0)
    {
        x = a;
        y1 = b;
        y2 = c;
        flag = d;
    }