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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <math.h>
  4.  
  5. float max(float a,float b);
  6.  
  7. float max(float a,float b)
  8. {
  9. 	if(a>b)
  10. 	{
  11. 		return a;
  12. 	}
  13. 	return b;
  14. }
  15.  
  16. int main(void)
  17. {
  18.     float a,b,c,d,e,f,x1,x2,y1,y2,z;
  19.     scanf("%f",&a);
  20.     scanf("%f",&b);
  21.     scanf("%f",&c);
  22.     scanf("%f",&d);
  23.     scanf("%f",&e);
  24.     scanf("%f",&f);
  25.     x1=max(max(a,c),e);
  26.     x2=-max(max(-a,-c),-e);
  27.     y1=max(max(b,d),f);
  28.     y2=-max(max(-b,-d),-f);
  29.     z=(x1-x2)*(y1-y2);
  30.     z-=(fabs(a-c)*fabs(b-d)+fabs(a-e)*fabs(b-f)+fabs(c-e)*fabs(d-f))/2;
  31.     printf("%f",z);
  32.     return 0;
  33. }
  34.  
Success #stdin #stdout 0s 9432KB
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stdin
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0 0 1 1 2 2
stdout
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1.000000
https://ideone.com/RUJ0iS
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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