# include<iostream>
# include<conio.h>

# define SIZE 90

using namespace std;


class queue
{
    int a[SIZE];
    int front;
    int rear;
public:


    queue();
    ~queue();
    queue operator+(queue &a);
    queue operator=(queue &);
    friend bool operator==(queue &a,queue &b){
            if(a.rear==b.rear)
            return true;
        else return false;
}
    friend bool operator!=(queue &a,queue &b){
                if(a.rear==b.rear)
            return false;
        else return true;
}
    friend bool operator<(queue &a,queue &b){
                if(a.rear<b.rear)
            return true;
        else return false;
    }
    friend bool operator>(queue &a,queue &b){
                if(a.rear>b.rear)
            return true;
        else return false;
    }
    friend ostream& operator<<(ostream &out,  queue a){

        out<<a.a[front];
        a.front++;

        return out;
    }
    friend istream& operator>>(istream &in, const queue &a){
        a.rear++;
        in>>a.a[rear];

        return in;
    }
    void insert(int i);
    int remove();
    int isempty();
    int isfull();
    void printQ();
};