#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n;
    char c;
    cin >> n >> c;

    for (int i = 0; i < ceil((double)n / 2); i++)
    {
        for (int j = 0; j < n; j++)
            cout << c;
        cout << endl;
    }
    return 0;
}