#include <bits/stdc++.h>
int main() {
  int n;
  while (scanf("%d", &n) == 1) {
    char a[n][n];
    int i = 0, j;
    for (i = 0; i < n; i++) {
      for (j = 0; j < n; j++) a[i][j] = '*';
    }
    int index = n / 2;
    a[0][index] = 'D';
    index--;
    int num = 3;
    for (i = 1; i < n / 2 + 1; i++) {
      int counter = 0;
      if (i != n / 2) {
        for (j = index; counter < num; j++) {
          a[i][j] = 'D';
          counter++;
        }
      } else {
        int k;
        for (k = 0; k < n; k++) a[i][k] = 'D';
      }
      index--;
      num += 2;
    }
    index += 2;
    int num2 = n - 2;
    for (i = n / 2 + 1; i < n - 1; i++) {
      int counter = 0;
      for (j = index; counter < num2; j++) {
        a[i][j] = 'D';
        counter++;
      }
      index++;
      num2 -= 2;
    }
    a[n - 1][n / 2] = 'D';
    for (i = 0; i < n; i++) {
      for (j = 0; j < n; j++) {
        if (a[i][j] != 'D')
          printf("*");
        else
          printf("%c", a[i][j]);
      }
      printf("\n");
    }
  }
  return 0;
}
