#include<stdio.h>
#define Max 100
int queue[Max];
int front=0,rear=-1;
void enqueue(int value)
{
    if(rear=Max-1)
    {
        return ;
    }
    else
    {
        rear++;
        enqueue[rear]=value;
    }
}
void display()
{
    for(int i=front;i<=rear;i++)
    {
        printf("%d\n",enqueue[i]);
    }
}
int main()
{
    int n;
    scanf("%d",&n);
    int a,b,c,d;
    scanf("%d\n%d\n%d\n%d\n",&a,&b,&c,&d);
    enqueue(a);
    enqueue(b);
    enqueue(c);
    d;
    return 0;
}