// editor4
#include<stdio.h>
typedef struct Number
{
    int data;
    struct *next;
}Node;

Node *head=NULL,*tail;

void create(int num)
{
    Node *newnode = (Node*)malloc(sizeof(Node));
    newnode->data=num;
    newnode->next=NULL;
    if(head==NULL)
    {
        head=newnode;
        tail=newnode;
    }
    else
    {
        tail->next=newnode;
        tail=newnode;
    }
}

void display()
{
    int itr;
    for(itr=head;itr!=NULL;itr=itr->next)
    {
        printf("%d"itr->data);
        return 0;
    }
}

int main()
{
    int n,i;
    scanf("%d",&n);
    for(i=1;1<=n;i++)
    {
        if(!scanf("%d",&n[i]))
        {
            printf("Invalid input");
            return 0;
        }
        create(num);
    }
    display();
    return 0;
}