/* 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 n =71;
       
        int potega = 0;
        double wynik = 0;
        while (wynik <= n)
        {
        	
            wynik = Math.pow(2, potega);
            potega ++;
            System.out.println(potega);
           
        }
    }
	}