#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  for (int i = 1; i <= n / 2; i++) {
    for (int j = 1; j <= (n / 2) + 1 - i; j++) cout << "*";
    for (int j = 1; j <= i * 2 - 1; j++) cout << "D";
    for (int j = 1; j <= (n / 2) + 1 - i; j++) cout << "*";
    cout << endl;
  }
  for (int i = 1; i <= n; i++) cout << "D";
  cout << endl;
  for (int i = n / 2; i >= 1; i--) {
    for (int j = 1; j <= (n / 2) + 1 - i; j++) cout << "*";
    for (int j = 1; j <= i * 2 - 1; j++) cout << "D";
    for (int j = 1; j <= (n / 2) + 1 - i; j++) cout << "*";
    cout << endl;
  }
}
