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  1. #include<stdio.h>
  2. int main()
  3. {
  4.     int x1,x2,x3,y1,y2,y3,tc,t,count=0;
  5. 	scanf("%d",&tc);
  6. 	for (t=0;t<tc;t++)
  7. 	{
  8. 		scanf("%d%d%d%d%d%d",&x1,&y1,&x2,&y2,&x3,&y3);
  9. 		if (x1!=x2&&x2!=x3&&x3!=x1)
  10. 		{
  11. 			if (((y1-y2)*(y3-y2))==-((x1-x2)*(x3-x2)))
  12. 			count++;
  13. 			else if (((y2-y1)*(y3-y1))==-((x2-x1)*(x3-x1)))
  14. 			count++;
  15. 			else if (((y1-y3)*(y2-y3))==-((x1-x3)*(x2-x3)))
  16. 			count++;
  17. 		}
  18. 		if (x1==x2)
  19. 		{
  20. 			if (y3==y2||y3==y1)
  21. 			count++;
  22. 		}
  23. 		else if (x3==x2)
  24. 		{
  25. 			if (y1==y3||y1==y2)
  26. 			count++;
  27. 		}
  28. 		else if (x1==x3)
  29. 		{
  30. 			if (y3==y2||y1==y2)
  31. 			count++;
  32. 		}
  33. 	}
  34. 	printf("%d\n",count);
  35. 	return 0;
  36. }
Success #stdin #stdout 0s 2688KB
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https://ideone.com/IrQv9X
language:
C++ 4.3.2 (gcc-4.3.2)
created:
11 years ago
visibility:
secret

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