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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Main
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		Scanner in = new Scanner(System.in);
  10. 		double a1 = in. nextDouble(), a2 = in. nextDouble();
  11. 		double b1 = in. nextDouble(), b2 = in. nextDouble();
  12. 		double c1 = in. nextDouble(),c2 = in. nextDouble();
  13. 		double x = in. nextDouble(), y = in. nextDouble(), f, g;
  14. 		f = (y - a2)*(b1 - a1) - (x - a1)*(b2 - a2);
  15. 		g = (c2 - a2)*(b1 - a1) - (c1 - a1)*(b2 - a2);
  16. 		if (f*g > 0) {
  17. 			f = (y - a2)*(c1 - a1) - (x - a1)*(c2 - a2);
  18. 			g = (b2 - a2)*(c1 - a1) - (b1 - a1)*(c2 - a2);
  19. 			if (f*g > 0) {
  20. 				f = (y - b2)*(c1 - b1) - (x - b1)*(c2 - b2);
  21. 				g = (a2 - b2)*(c1 - b1) - (a1 - b1)*(c2 - b2);
  22. 				if (f*g > 0)
  23. 					System.out.println("Yes\n");
  24. 				else
  25. 					System.out.println("No\n");
  26. 			}
  27. 			else
  28. 				System.out.println("No\n");
  29. 		}
  30. 		else
  31. 			System.out.println("No\n");
  32. 	}
  33. }
Success #stdin #stdout 0.16s 321280KB
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0.3  0.2  1.3  0.2  0.3  0.8  0.3  0.6
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No
https://ideone.com/riAW7N
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
secret

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