8

// задача 8
#include <iostream>
#include<deque>
using namespace std;
int main()
{
deque <int> d;
int a;
cin>>a;
for (int i =a;i>a;i--)
{
	cin>>d[i];
d.push_front(a);
d.push_back(a);
}
while (!d.empty())
{
cout<<d.front()<<" ";
d.pop_front();
}}