#include <bits/stdc++.h>
using namespace std;
long long int i, j, k;
string s;
long long int n, m, ans;
int main() {
  cin >> n;
  m = (n - 1) / 2;
  s = "";
  for (long long int i = 0; i < n; i++) {
    s += '*';
  }
  string s1[n];
  for (long long int i = 0; i < m + 1; i++) {
    s1[i] = s;
  }
  for (i = 0; i < (m + 1); i++) {
    for (j = (m - i); j <= (m + i); j++) {
      s1[i][j] = 'D';
    }
  }
  for (long long int i = 0; i < m; i++) {
    s1[n - 1 - i] = s1[i];
  }
  for (long long int i = 0; i < n; i++) {
    cout << s1[i] << endl;
  }
  return 0;
}
