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

int main()
{
    int n;
    string s;
    cin >> n;
    cin.get();
    getline(cin, s);

    while (s.size() % n) s += ' ';
    int m = s.size() / n;
    char a[n][m];
    int l = 0;
    for (int i = m - 1; i >= 0; i--)
        for (int j = 0; j < n; j++) a[j][i] = s[l++];
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < m; j++) cout << a[i][j];
        cout << endl;
    }

    return 0;
}