#include<stdio.h>
int size,top=-1;
int arr[5];
void enqueue()
{
    if(top==size-1)
    {
        printf("Queue is full");
    }
    else
        arr[++top]=num;
}
void traverse()
{
    for(int i=1;i<top;i++)
       printf("%d",arr[i]);
}
int main()
{
    int num,itr;
    scanf("%d",&size);
    if(size<0)
    {
        printf("Invalid input");
        return 0;
    }
    for(itr=0;itr<size;itr++)
    {
        scanf("%d",&num);
        enqueue(num);
    }
    traverse();
    return 0;
}