#include <bits/stdc++.h>
using namespace std;
int n; char x;
int main(){
ofstream cout("afisaren.out");
ifstream cin ("afisaren.in");
cin >> n; if (n == 0) return 0;
while (cin >> x) cout << x;
cout << '\n';
for (int i = 0; i < n - 1; ++i)
{
ifstream cin("afisaren.in");
cin >> n;
while (cin >> x) cout << x;
cout << '\n';
}
}
