#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n) {
    int y = 1;
    for (; y <= n / 2 + 1; y++) {
      for (int x = 1; x <= n; x++) {
        if (x <= n / 2 + 1 - y || x >= n / 2 + 1 + y)
          cout << '*';
        else
          cout << 'D';
      }
      cout << "\n";
    }
    for (y = n / 2; y > 0; y--) {
      for (int x = 1; x <= n; x++) {
        if (x <= n / 2 + 1 - y || x >= n / 2 + 1 + y)
          cout << '*';
        else
          cout << 'D';
      }
      cout << "\n";
    }
    cout << endl;
  }
  return 0;
}
