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  1. #include<stdio.h>
  2. #include<math.h>
  3.  
  4. long long dist(int, int, int, int);
  5.  
  6. int main()
  7. {
  8. 	int N, x1, x2, x3, y1, y2, y3, count=0;
  9. 	long long side1, side2, side3;
  10.  
  11. 	scanf("%d",&N);
  12.  
  13. 	while(N--)
  14. 	{
  15. 		scanf("%d %d %d %d %d %d",&x1,&y1,&x2,&y2,&x3,&y3);
  16.  
  17. 		side1 = dist(x1, y1, x2, y2);
  18. 		side2 = dist(x2, y2, x3, y3);
  19. 		side3 = dist(x3, y3, x1, y1);
  20.  
  21. 		if(side1>side2 && side1>side3)
  22. 		{
  23. 			if( side1 == side2+side3 )
  24. 				count++;
  25. 		}
  26.  
  27. 		else if(side2>side3 && side2>side1)
  28. 		{
  29. 			if( side2 == side1+side3 )
  30. 				count++;
  31. 		}
  32.  
  33. 		else if(side3>side1 && side3>side2)
  34. 		{
  35. 			if( side3 == side1+side2 )
  36. 				count++;
  37. 		}
  38. 	}
  39.  
  40. 	printf("%d\n",count);
  41.  
  42. 	return 0;
  43. }
  44.  
  45. long long dist(int X1, int Y1, int X2, int Y2)
  46. {
  47. 	return(((X1-X2)*(X1-X2)+(Y1-Y2)*(Y1-Y2)));
  48. }
Success #stdin #stdout 0s 3300KB
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https://ideone.com/ygZsvc
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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