#include<bits/stdc++.h>
using namespace std;

class Queue
{
public:
  stack< int> s1, s2;
  void Push (int i)
  {
    cout << "Pushing the element : " << i << endl;
    s1.push (i);
  }
  int pop ()
  {
    if (s1.empty ())
    {
	  cout << "The queue is empty" << endl;
	  return -1;
    }
    while (!s1.empty ())
    {
	  s2.push (s1.top ());
	  s1.pop ();
    }
    int b = s2.top ();
    s2.pop ();
    cout << "Popping the element : " << b << endl;
    while (!s2.empty ())
    {
	  s1.push (s2.top ());
	  s2.pop ();
    }
    return b;
  }
  void Show ()
  {
    while (!s1.empty ())
    {
	  s2.push (s1.top ());
	  s1.pop ();
    }
    while (!s2.empty ())
    {
	  cout << s2.top () << " ";
	  s1.push (s2.top ());
	  s2.pop ();
    }
  }
  int front ()
  {
    if (s1.empty ())
    {
	  cout << "The queue is empty" << endl;
	  return -1;
    }
    while (!s1.empty ())
    {
	  s2.push (s1.top ());
	  s1.pop ();
    }
    int b = s2.top ();
    while (!s2.empty ())
    {
	  s1.push (s2.top ());
	  s2.pop ();
    }
    return b;
  }
};

int main ()
{
  Queue q;
  q.Push (1);
  q.Push (5);
  q.Push (2);
  q.Push (11);
  cout << "The Queue now is : ";
  q.Show ();
  cout << endl;
  cout << "The front value right now is : " << q.front () << endl;
  q.pop ();
  q.pop ();
  q.Push (12);
  q.Push (8);
  cout << "The front value right now is : " << q.front () << endl;
  cout << "The Queue now is : ";
  q.Show ();
  cout << endl;
}