Java|PTA乙级|1001 害死人不偿命的(3n+1)猜想 (15分)

//简单题

import java.util.Scanner;
public class Main {
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int sum=0;
        while(n!=1){
            if (n%2==0){
                n=n/2;
                
            }else {
                n=(3*n+1)/2;
                
            }
            sum++;
        }
        System.out.println(sum);
    }
}