#include <bits/stdc++.h>
using namespace std;
void filein() { freopen("input.txt", "r", stdin); }
void fileout() { freopen("output.txt", "w", stdout); }
long long n, a[10000], sm = 0;
int main() {
  cin >> n;
  int h = 1;
  int j1 = n / 2;
  for (int i = 1; i <= n / 2; i++) {
    for (int j = 1; j <= j1 - i + 1; j++) cout << "*";
    for (int hh = 1; hh <= h; hh++) cout << "D";
    h += 2;
    for (int j = 1; j <= j1 - i + 1; j++) cout << "*";
    cout << endl;
  }
  for (int i = 0; i < n; i++) cout << "D";
  cout << endl;
  h = n - 2;
  j1 = n / 2;
  for (int i = 1; i <= n / 2; i++) {
    for (int j = 1; j <= (n - h) / 2; j++) cout << "*";
    for (int hh = 1; hh <= h; hh++) cout << "D";
    for (int j = 1; j <= (n - h) / 2; j++) cout << "*";
    h -= 2;
    cout << endl;
  }
}
