using System;

​

class Solution {

​

    private int traduction(string S){

        int c=0;

        for(int i=0; i<S.Length;i=i+1){

            int c2=1;

            for(int k=0;k<(S.Length-i);k=k+1){

                c2=c2*2;

            }

            c=c2+c;

        }

        return c;

    }

    public int solution(string S) {

        int n= traduction(S);

        int c=0;

        while(c!=0){

            if ((n/2)*2==n){

                c=c/2;

            }

            else{

                c=c*3+1;

            }

        }

        return c;

    }

}

​

public class Program

{

    public static void Main()

    {

    }

}