#include <iostream>
using namespace std;
const int max_size = 1000;
struct red {
    int niza[max_size];
    int front, rear;

    void init() {
        front = 0;
        rear = -1;
    }

    bool isEmpty() {
        if(rear == -1) {
            return true;
        }
        else {
            return false;
        }
    }
    bool isFull() {
        if(rear == max_size - 1) {
            return true;
        }
        else {
            return false;
        }
    }

    void push(int element) {
        if(isFull()) {
            cout << "Redot e poln" << endl;
            return;
        }
        rear++;
        niza[rear] = element;
    }
    void pop() {
        if(isEmpty()) {
            cout << "Nema elementi vo redot" << endl;
            return;
        }
        for(int i = front; i < rear; i++) {
            niza[i] = niza[i + 1];
        }
        rear--;
    }
    int peek() {
        if(isEmpty()) {
            cout << "Prazen red" << endl;
            return -1;
        }
        return niza[front];
    }

};


int main()
{
    red q;
    q.init();

    q.push(10);
    q.push(5);
    q.push(3);

    cout << q.peek() << endl;
    q.pop();
    cout << q.peek() << endl;



    return 0;

}