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  1. import java.util.*;
  2. import java.math.*;
  3.  
  4. class Main
  5. {
  6. public static void main (String[] args)
  7. {
  8. Scanner in = new Scanner(System.in);
  9. double s1, s2, n, x;
  10. n = in.nextDouble();
  11. x = n*(5-Math.sqrt(3)-Math.sqrt(6*Math.sqrt(3)-4))/(8*(2-Math.sqrt(3)));
  12. s1 = 4*x; //Длина пути по дороге
  13. s2 = Math.sqrt(2*(n*n - 4*x*n + 8*x*x)); //Длина пути напрямик
  14. System.out.print(s1 + " " + s2);
  15. }
  16. }
Success #stdin #stdout 0.12s 2841600KB
stdin
2
stdout
2.760405446616672 2.1396767146567495