#include <iostream.h>
#include <stdio.h>
#include <stdlib.h>
typedef struct List//節點的定義
{
	int data;
	struct List *next;
}List,* Link;
Link CreateList(Link head)//創建鏈表
{
	head=(Link)malloc(sizeof(List));
	head->next=NULL;
	//Link pointor;
	while (1)
	{
		Link pointor=(Link)malloc(sizeof(List));
		cin>>pointor->data;
		if (pointor->data==0)
		{
			break;
		}
        pointor->next=head->next;
		head->next=pointor;
	}
	return head;
}
void PrintList(Link head)//輸出集合
{
	Link newhead=head->next;
    do
    {
       cout<<newhead->data<<" ";
	   newhead=newhead->next;
    }while (newhead!=NULL);
	cout<<endl;
}
void SetIntersection(Link head1,Link head2)//集合的交集
{
   for(Link p=head1->next;p!=NULL;p=p->next)
   for(Link q=head2->next;q!=NULL;q=q->next)
   {
	   if (p->data==q->data)
	   {
		   cout<<p->data<<" ";
	   }
   }
   cout<<endl;
}
void SetAltogeter(Link head1,Link head2)//集合并集
{
	for (Link p=head1->next;p!=NULL;p=p->next)
	{
		
		 for (Link q=head2->next;q!=NULL;q=q->next)
		 {
			if(p->data!=q->data&&q->next==NULL)
			{
			  cout<<p->data<<" ";
			}
			if(p->data==q->data)
			{
				break;
			}
		 }
	}
		   PrintList(head2);
		   cout<<endl;
}
void SetMission(Link head1,Link head2)//集合的差
{
	bool flag;
	cout<<"Head1-Head2:"<<endl;
	for (Link p=head1->next;p!=NULL;p=p->next)
	{
		flag = true;
		
		 for (Link q=head2->next;q!=NULL;q=q->next)
		 {
			if(p->data==q->data)
			{
				flag = false;
				break;
			}
		 }
		 if(flag) cout<<p->data <<" "<<endl;
	}
	cout<<endl;
	cout<<"Head2-Head1"<<endl;
	for (Link m=head2->next;m!=NULL;m=m->next)
	{
		for (Link n=head1->next;n!=NULL;n=n->next)
		{
			if (m->data!=n->data&&n->next==NULL)
			{
				cout<<m->data<<" ";
			}
			if (m->data==n->data)
			{
				break;
			}
		}
	}
	cout<<endl;
}
void main()
{
	freopen("result.txt","w+",stdout);
	freopen("test.txt","r+",stdin);
	/*for(int i=0;i<10000;i++)
		cout<<rand()<<" ";
	cout << 0<<endl;
	for(i=0;i<10000;i++)
		cout<<rand()<<" ";
	cout<<0<<endl;*/
   	Link head1;
	Link head2;
    head1=CreateList(head1);
    head2=CreateList(head2);
    SetIntersection(head1,head2);
        
      
}//主函數結束