// editor1
#include<stdio.h>
#include<stdlib.h>
typedef struct Node{
    int data;
    struct Node *next;
    struct Node *prev;
}nd;
nd *head=NULL,*tail;
void create(int num){
    nd *newnode=(nd*)malloc(1*sizeof(nd));
    newnode->data=num;
    newnode->next==NULL;
if(head==NULL){
    head=newnode;
    tail=newnode;
    }
    else{
    newnode->prev=head;
    tail->next=newnode;
    tail=newnode;
}
}
void delete(int x){
itr=head->next;
if(head->data==x){
    head=head->next;
    head->prev=NULL;
}
else if(tail->data==x){
    tail->prev->next=NULL;
}else{
    while(itr!=NULL){
        if(itr->data==x){
            itr->next->prev=itr->prev;
            itr->prev->next=itr->next;
            break;
        }
        itr=itr->next;
    }
}
}
void display(){
    nd *itr;
    for(itr=head;itr!=NULL;itr=itr->next){
        printf("%d",itr->data);
    }
}
int main(){
    int n,num,x;
    scanf("%d",&n);
    for(int i=0;i<n;i++){
      scanf("%d",&num);
      create(num);
    }
    scanf("%d",&x);
    delete(x);
    display();
    return 0;
}