// editor1
#include<stdio.h>
#define max 100
int queue[max];
int front=-1,rear=-1;
void enqueue(int num){
    if(rear==max-1);
    printf("queue is full");
    return;
    if(front==-1){
        front=0;
    }
}
    queue[++rear]=num;
}void dequeue(){
    if(front==-1||front>rear){
        printf("queue is empty");
    }
    printf("%d",queue[front]);
    front++;
}
int main(){
    int n;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid input");
        return 0;
    }
        int num;
        for(int i=0;i<n;i++){
            scanf("%d",&num);
            enqueue(num);
        }
        for(int i=0;i<n;i++){
            dequeue();
        }
       return 0;
    }