import java.util.Scanner;
public class PrintButterFly {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter the no of rows");
int n = sc.nextInt();
//Upper left part
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
//to print spaces
int spaces = 2 * (n - i);
for (int j = 1; j <= spaces; j++) {
System.out.print(" ");
}
//toprint right part
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}
//Lower Half
for (int i = n; i >= 0; i--) {
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
//to print spaces
int spaces = 2 * (n - i);
for (int j = 1; j <= spaces; j++) {
System.out.print(" ");
}
//toprint right part
for (int j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}
}
}
