2021-04-18

#include<stdio.h>
int main()
{
    int n,t=0;
    scanf("%d",&n);
    while(n!=1)
    {
        if (n%2==0)
            n=n/2;
        else
            n=(3*n+1)/2;
        t++;
            }
    printf("%d",t);
    return 0;
}