#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  scanf("%d", &n);
  char a[n][n];
  for (int i = 0; i < n; i++)
    for (int j = 0; j < n; j++) a[i][j] = '*';
  int begin, end;
  begin = end = n / 2;
  for (int i = 0; i <= n / 2; i++) {
    for (int j = begin; j <= end; j++) a[i][j] = 'D';
    begin--;
    end++;
  }
  begin += 2;
  end -= 2;
  for (int i = n / 2 + 1; i < n; i++) {
    for (int j = begin; j <= end; j++) a[i][j] = 'D';
    begin++;
    end--;
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) printf("%c", a[i][j]);
    printf("\n");
  }
  return 0;
}
