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