#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  char A[n + 5][n + 5];
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= n; j++) {
      A[i][j] = 'D';
    }
  }
  int mx = n / 2;
  int lim1 = mx;
  int lim2 = n - mx;
  for (int r = 1; r <= mx; r++) {
    for (int col1 = 1, col2 = n; col1 <= lim1 && col2 >= lim2; col1++, col2--) {
      A[r][col1] = '*';
      A[r][col2] = '*';
    }
    lim1--;
    lim2++;
  }
  lim1 = mx;
  lim2 = n - mx;
  for (int r = n; r >= n - mx; r--) {
    for (int col1 = 1, col2 = n; col1 <= lim1 and col2 >= lim2;
         col1++, col2--) {
      A[r][col1] = '*';
      A[r][col2] = '*';
    }
    lim1--;
    lim2++;
  }
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= n; j++) {
      cout << A[i][j];
    }
    cout << "\n";
  }
  return 0;
}
