#include <bits/stdc++.h>
using namespace std;
int n, a[10000005], c1, c2;
int main() {
  cin >> n;
  a[1] = 1;
  for (int i = 2; i <= n / 2 + 1; ++i) {
    a[i] = a[i - 1] + 2;
  }
  int c = n / 2 + 1;
  for (int i = n / 2 + 2; i <= n; i++) {
    c--;
    a[i] = a[c];
    if (i == n) a[i] = 1;
  }
  for (int i = 1; i <= n; ++i) {
    for (int j = 1; j <= (n - a[i]) / 2; ++j) {
      cout << '*';
    }
    for (int j = 1; j <= a[i]; ++j) cout << 'D';
    for (int j = 1; j <= (n - a[i]) / 2; ++j) cout << '*';
    cout << endl;
  }
}
