32 lines
688 B
C++
32 lines
688 B
C++
#include<stdio.h>
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double max(double a,double b)
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{
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if(a>b)
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return a;
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else
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return b;
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}
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double min(double a,double b)
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{
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if(a<b)
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return a;
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else
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return b;
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}
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int main()
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{
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double x1,y1,x2,y2,x3,y3,x4,y4,t;
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while(scanf("%lf%lf%lf%lf%lf%lf%lf%lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4)!=EOF)
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{
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if (x1>x2) t=x1,x1=x2,x2=t;
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if (y1>y2) t=y1,y1=y2,y2=t;
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if (x3>x4) t=x3,x3=x4,x4=t;
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if (y3>y4) t=y3,y3=y4,y4=t;
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x1=max(x1,x3);
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y1=max(y1,y3);
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x2=min(x2,x4);
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y2=min(y2,y4);
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printf("%.2lf\n",x1>x2||y1>y2?0:(x2-x1)*(y2-y1));
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}
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}
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