#include <bits/stdc++.h>
using namespace std;
const long long MAX = 1e6 + 1;
long long x, a, cnt, k, y, z, ans, n, m;
vector<long long> v;
pair<long long, long long> p;
set<long long> st;
string s;
char ch[1001][1001];
bool e[MAX], me;
int main() {
  ios_base::sync_with_stdio(false);
  cin >> n;
  for (int i = 0, j = n / 2, k = 1; i <= (n - 1) / 2; i++) {
    for (int x = 0; x < j; x++) {
      cout << '*';
    }
    for (int x = 0; x < k; x++) {
      cout << 'D';
    }
    for (int x = 0; x < j; x++) {
      cout << '*';
    }
    j--;
    k += 2;
    cout << '\n';
  }
  for (int i = 0, j = 1, k = n - 2; i < (n - 1) / 2; i++) {
    for (int x = 0; x < j; x++) {
      cout << '*';
    }
    for (int x = 0; x < k; x++) {
      cout << 'D';
    }
    for (int x = 0; x < j; x++) {
      cout << '*';
    }
    j++;
    k -= 2;
    cout << '\n';
  }
}
