package codingBlocks_Pattern;
import java.util.Scanner;
public class Ques_twenty2 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int star = 2*n-1;
int str1 = n;
int str2 = n;
int space = 1;
int row = 1;
while(row <= n) {
for(int j =1;j<= str1; j++) {
System.out.print("*");
}
if (row > 1) {
for(int k =2; k<= space; k++) {
System.out.print(" ");
}
}
for (int y=1;y<= str2; y++) {
System.out.print("*");
}
System.out.println();
str1--;
str2--;
space = space+2;
row++;
}
}
}