#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m, sum = 0, ans = 0, tem1, tem2;
  string s, c;
  cin >> n;
  int fo = 0;
  for (int i = 1, j = 1, b = 1; i <= n; i++, j += 2, b++) {
    int req = n / 2 + 1 - b + 1;
    for (int h = 1; h <= n; h++) {
      if (h >= req && h <= req + j - 1)
        cout << 'D';
      else
        cout << '*';
    }
    if (j == n || fo) {
      j -= 4;
      fo = 1;
    }
    if (b == n / 2 + 1 || fo) {
      b -= 2;
      fo = 1;
    }
    cout << endl;
  }
  return 0;
}
