/* 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
	{
		// your code goes here
	}
	 public static int sss(int f)
    {
        int s=0;
        switch(f)
      {
          case 0:
             s+=f+1;
              break;
          case f>1:
             s += sss(f-1)+sss(f/2);
              break;
          case f=1:
          return s;
          break;
      }
 
 
    }
}

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