1

#include <fstream>
#include <iostream>

using namespace std;

struct item {
    char s[100];
    item * next;
} * first, * last;

char s[100];
int n;

int main() {
    ifstream fin("input.txt");
    ofstream fout("output.txt");
    fin >> n;
    fin.getline(s, 100);
    first = last = NULL;
    while (n--) {
        fin.getline(s, 100);
        item * cur = new item;
        cur -> next = NULL;
        strcpy(cur -> s, s);
        fout << s << endl;
        if (first == NULL)
            first = last = cur;
        else {
            cur -> next = first;
            first = cur;
        }
    }
    fout << endl;
    for (item * cur = first; cur; cur = cur -> next)
        fout << cur -> s << endl;
}