/* package whatever; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		
    int i = 1;
    
        while (true){
            i = i + i;
            System.out.println(i);
        }
    

	}
}