/***************************************************************************
* Name:
* NetID:
* Precept:
*
* Description: It's a secret.
*
* Dependencies: None.
***************************************************************************/
public class SecretMessage {
public static void main(String[] args) {
int n = Integer.parseInt(args[0]);
for (int i = -3*n/2; i <= n; i++) {
for (int j = -3*n/2; j <= 3*n/2; j++) {
// inside either diamond or two circles
if ( (Math.abs(i) + Math.abs(j) < n)
|| ((-n/2-i) * (-n/2-i) + ( n/2-j) * ( n/2-j) <= n*n/2)
|| ((-n/2-i) * (-n/2-i) + (-n/2-j) * (-n/2-j) <= n*n/2)
)
System.out.print("* ");
else System.out.print(". ");
}
System.out.println();
}
}
}