A SINGLE LINE LOGIC ALSO GIVING TLE FOR DCE05 question !!!!

the question link is

http://www.codechef.com/problems/DCE05

package mat;

import java.lang.Math;

import java.util.Scanner;
public class Mat {
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner sc;
        sc = new Scanner(System.in);
        double i,j,k,n;
        long ans,t;
        t=sc.nextLong();
        while(t-->0)
        {
        n=sc.nextLong();
        ans=(long)Math.pow(2,Math.getExponent(n));
        System.out.println(ans);
        }
    }
}