#include <bits/stdc++.h>
using namespace std;
int main() {
  int a;
  cin >> a;
  int r = a / 2;
  for (int i = 0; i < a / 2; i++) {
    for (int y = 0; y < r; y++) {
      cout << "*";
    }
    for (int p = 0; p < a - r * 2; p++) {
      cout << "D";
    }
    for (int o = 0; o < r; o++) {
      cout << "*";
    }
    cout << endl;
    r--;
  }
  for (int i = 0; i < a / 2 + 1; i++) {
    for (int y = 0; y < r; y++) {
      cout << "*";
    }
    for (int p = 0; p < a - r * 2; p++) {
      cout << "D";
    }
    for (int o = 0; o < r; o++) {
      cout << "*";
    }
    cout << endl;
    r++;
  }
  return 0;
}
