#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
struct Node {
    char data[10];
    struct Node* prev;
    struct Node* next;
}Node;

struct Node* createNode(char* data){
    struct Node* newNode=(struct Node*)malloc(sizeof(struct Node));
    strcpy(newNode->data,data);
    newNode->prev=NULL;
    newNode->next=NULL;
    return newNode;
}

void append(struct Node** head,char* data){
    struct Node* newNode= createNode(data);
    if(*head == NULL){
        *head=newNode;
        return;
    }
    
    struct Node* temp=Node;
    while(temp->next!=NULL){
        temp=temp->next;
    }
    temp->next = newNode;
    newNode->prev=temp;
}

void deletepos(struct Node** head,int pos,int n){
    if(pos<0||pos>=n){
        printf("Invalid input");
        exist(0);
    }
    struct Node* temp=*head;
    int index=0;
    while(temp != NULL && index<pos){
        tem=tem->next;
        index++;
    }
    if(temp == NULL) return;
    if(temp->prev == NULL){
        *head = temp->next;
        if(*head != NULL)(*head)->prev = NULL;
    }
    else{
    temp->prev->next=temp->next;
    if(temp->next != NULL){
        temp->next->prev=temp->prev;
    }
    }
    free(temp);
}
void printlist(struct Node* head){
    if(head == NULL){
        printf("List is empty");
        return;
}
struct Node* temp=head;
while(temp!=NULL){
    printf("%s",temp->data);
    temp=temp->next;
}
printf("\n");
}
int isvalidname(char* str){
    if(!isalpha(str[0])) return 0;
    for(int i=1;str[i] !='\0';i++){
        if(!isalnum(str[i])) return 0;
    }
    return 1;
}

int main(){
    int n,pos;
    id(scanf("%d",&n) !=1|| n<1||n>1000){
       printf("Invalid input");
       return 0;
    }
    struct Node* head=NULL;
    for(int i=0;i<n;i++){
        charbuffer[10];
        if(scanf("%s",buffer) != 1|| isvalidname(buffer)){
            printf("Invalid input");
            return 0;
        }
    }
    append(&head,buffer);
    if(scanf("%d",&pos) != 1){
        printf("Invalid input");
        return 0;
    }
    deletepos(&head,pos,n);
    printlist(head);
    return 0;
}