java，总是报wrong error，谁能帮我看看

这是我的代码:
package pro;
import java.util.Scanner;

public class pro {
public static void main (String[] args) {
Scanner sc = new Scanner(System.in);
int uk = sc.nextInt();
sc.close();
int num = uk;
int scount=0;
ji j = new ji();
ou o = new ou();
for (int i=0;i<num;i++) {
if(uk==2||uk==3) {
scount++;
break;
}
if(uk%2==0) {
uk = o.cal(uk);
scount++;
}else{
if(uk%3==0) {
uk = j.cal(uk);
scount++;
}else {
uk = uk-1;
uk = o.cal(uk);
scount++;
}
}
}
System.out.println(scount);
}
}

class ji {
int cal(int ji_uk) {
ji_uk=ji_uk/3;
return ji_uk;
}
}

class ou {
int cal(int ou_uk) {
ou_uk=ou_uk/2;
return ou_uk;
}
}

一个测试用例都没通过吗