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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.text.*;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. public static void main (String[] args) throws java.lang.Exception
  12. {
  13. s.setDecimalSeparator('.');
  14. DecimalFormat f = new DecimalFormat("#,####0.0000",s);
  15. Scanner in = new Scanner(System.in);
  16. while (in.hasNextLong())
  17. {
  18. System.out.println(f.format(Math.sqrt(in.nextLong()) ));
  19. }
  20. }
  21. }
  22.  
Success #stdin #stdout 0.14s 321344KB
stdin
1 2 3
4
5
6
stdout
1.0000
1.4142
1.7321
2.0000
2.2361
2.4495