Poj Solution 2959

http://poj.org/problem?id=2959

//* @author: 82638882@163.com
import java.util.*;
public class Main
{
 public static void main(String[] args)
 {
    Scanner in=new Scanner(System.in);
    int a=in.nextInt();
    while((a--)!=0)
    {
         double D=in.nextDouble();
      double d=in.nextDouble();
      double s=in.nextDouble();
      System.out.printf("%dn", (int)(Math.PI/Math.asin((d+s)/(D-d))));
    }
  }
}
											
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