Check bit - Decimal to Binary String

import java.io.*;
import java.util.*;

public class Main {

    public static void main(String[] args) {
       Scanner sc=new Scanner(System.in);
       int n=sc.nextInt();
       int t=sc.nextInt();
       StringBuilder s=new StringBuilder();
       while(n!=0){
        int d=n%2;
        s.append(d);
        n=n/2;
       }
       System.out.println(t <= s.length() && s.charAt(t) == '1' ? "true" : "false");

    }
}