#include <bits/stdc++.h>
using namespace std;
using namespace std;
vector<int> v;
int main() {
  int n, i, j, w, t;
  cin >> n;
  t = n / 2;
  w = n / 2 + 1;
  for (i = 1; i <= n / 2; ++i) {
    for (j = 1; j <= t; ++j) cout << '*';
    for (j = t + 1; j <= w; ++j) cout << 'D';
    for (j = w + 1; j <= n; ++j) cout << '*';
    cout << '\n';
    w++;
    t--;
  }
  for (i = 1; i <= n; ++i) cout << 'D';
  cout << '\n';
  t = 1;
  w = n - 1;
  for (i = 1; i <= n / 2; ++i) {
    for (j = 1; j <= t; ++j) cout << '*';
    for (j = t + 1; j <= w; ++j) cout << 'D';
    for (j = w + 1; j <= n; ++j) cout << '*';
    cout << '\n';
    w--;
    t++;
  }
  return 0;
}
