// editor3
#include<stdio.h>
typedef struct node{
    int data;
    struct node *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()
{
    Node *itr;
    for(itr=head;itr!-NULL;itr=itr->next)
    {
        printf("%d",itr->data);
    }
}

int main()
{
    int size,i;
    if(!scanf("%d",size))
    {
        printf("Invalid input");
        return 0;
    }
    int num[size];
    for(i=1;i<size;i++)
    {
        if(scanf("%d",num[i])%2==0);
        {
            create(num[i]);
        }
        else
        {
            printf("Empty");
            return 0;
        }
    }
    display();
    return 0;
}