#include<iostream>
using namespace std;

int queue[10];
int front=0;
int rear=0;

void Enque(int x)
{
	if(rear==10)
	{
		cout<<"\nOverflow";
	}
	else
	{
		queue[rear++]=x;
	}
}

void Deque()
{
	if (front==rear)
	{
		cout<<"\nUnderflow";
	}
	
	else
	{
		cout<<"\n"<<queue[front++]<<" deleted";
		for (int i = front; i < rear; i++)
		{
			queue[i-front]=queue[i];
		}
		rear=rear-front;
		front=0;
	}


}

void show()
{
	for (int i = front; i < rear; i++)
	{
		cout<<queue[i]<<"\t";
	}
}

int main()
{
	int ch, x;
	do
	{
		cout<<"\n1. Enque";
		cout<<"\n2. Deque";
		cout<<"\n3. Print";
		cout<<"\nEnter Your Choice : ";
		cin>>ch;
		if (ch==1)
		{
			cout<<"\nInsert : ";
			cin>>x;
			Enque(x);
		}
		else if (ch==2)
		{
			Deque();
		}
		else if (ch==3)
		{
			show();
		}
	}
	while(ch!=0);

	return 0;
}