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  1. /* package whatever; // don't place package name! */
  2. import java.util.Random;
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static double solution(int x1,int y1,int r1,int x2,int y2,int r2)
  11. 	{
  12. 		int intersect=0;
  13. 		int trials=200000*r1*r1*4;
  14. 		for(int i=0;i<trials;i++)
  15. 		{
  16. 			double x=(Math.random()-0.5) * r1*2+x1;
  17. 			double y=(Math.random()-0.5) * r1*2+y1;
  18. 			if( (x-x2)*(x-x2)+(y-y2)*(y-y2)<r2*r2 )intersect++;
  19. 		}
  20. 		return intersect*1.0/trials*(r1*r1)*3.1415926535;
  21. 	}
  22. 	public static void main (String[] args) throws java.lang.Exception
  23. 	{
  24. 		System.out.print(String.format("%.6f",solution(2,2,3,5,5,3)));
  25. 		// your code goes here
  26. 	}
  27. }
Success #stdin #stdout 0.49s 2841600KB
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5.550413
https://ideone.com/TjiBfa
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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