/**
\func int main()
*/
int main()
{
int N, dat;
Queue queue;
char command[4];
cin >> N;
for (int i = 1; i <= N; i++) {
scanf("%s", &command);
switch (command[0]) {
case 'a':
scanf("%d", &dat);
queue.Add(dat);
break;
case 'g':
queue.Show();
break;
case 'd':
queue.Del();
break;
default:
break;
}
}
system("pause");
}
