import java.util.LinkedList;

 public class Myqueue {

     private LinkedList<Object> linkedList;

     public Myqueue() {

         linkedList = new LinkedList<>();

     }

     public void intoMyqueue(Object o) {

         linkedList.add(o);

     }

     public Object outMyqueue() {

         int size = linkedList.size();

         if (size > 0)

             return linkedList.remove(0);

         else

             return -1;

     }

     public int getSize() {

         return linkedList.size();

     }

 }