import java.util.Scanner;
public class Main {
public static void main(String[] args) {
int num;
Scanner sc=new Scanner(System.in);
System.out.println("Enter number of rows");
num=sc.nextInt();
int mid=(num/2)+1;
for(int i=1; i<=num;i++)
{
for(int j=1;j<=num;j++)
{
if(i==mid || j==mid ||(i==1 && j >mid) || (i==num && j<mid) || (j==1 && i<mid) || (j==num && i>mid))
{
System.out.print("*");
}
else
{
System.out.print(" ");
}
}
System.out.println();
}
}
}