#include <iostream>
#include <deque>
using namespace std;
int main ()
{
deque<int> d;
cout << "Deque is ";
d.empty() ? cout << "" : cout << "not ";
cout << "empty" << endl;
d.push_back(100);
cout << "Deque is ";
d.empty() ? cout << "" : cout << "not ";
cout << "empty" << endl;
getchar();
return 0;
}