{}
import java.util.*;
class Pattern {
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
System.out.print("enter the rows=");
int n=sc.nextInt();
for(int i=1; i<=n; i++){
for(int j=1; j<=2*n-1; j++){
if(i==j || (i+j)==2*n)
System.out.print("*"+" ");
else
System.out.print(" "+" ");
}
System.out.println();
}
}
}