版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/CSDN___CSDN/article/details/84404056
#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <algorithm>
using namespace std;
const int maxn = 100000;
double a[4],b[4];
int main ()
{
double l,w,x1,y1,x2,y2,x3,y3,x4,y4,x,y;
while(scanf("%lf%lf%lf%lf%lf%lf%lf%lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4)!=EOF)
{
a[0]=x1;a[1]=x2;a[2]=x3;a[3]=x4;
b[0]=y1;b[1]=y2;b[2]=y3;b[3]=y4;
sort(a,a+4);
sort(b,b+4);
l=fabs(x1-x2)+fabs(x3-x4)-(a[3]-a[0]);
w=fabs(y1-y2)+fabs(y3-y4)-(b[3]-b[0]);
if(l<0 || w<0) printf("0.00\n");
else printf("%.2lf\n",l*w);
}
return 0;
}