#include<stdio.h>
#include<string.h>
#define max 100
int queue[max];
int front=1,rear=-1;
void enqueue(int n){
    if(rear=max-1){
        printf("Queue is full");
        return ;
    }
    if(front==1)
        front=0;
    queue[++rear]=n;
}
void dequeue(){
    if(front==1||front>rear){
        printf("Queue is empty");
        return ;
    }
    printf("%d ",queue[front]);
    front++;
}
int main(){
    int n;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid input");
        return 0;
    }
    for(int i=0;i<n;i++){
        int x;
        scanf("%d",x);
        enqueue(x);
    }
    for(int i=0;i<n;i++){
        dequeue();
    }
}