/* 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
	{
		long long n=1000000000000;
		int ans=0;
		while(n!=1)
    {
     if(n%3==0){
       ans += 1;
       n/=3; }
      else if (n%2==0){
       ans += 1;
       n/=2;}
      else {
    	  n--;ans++;
      }
    } 
    System.out.println(ans);
	}
}