import java.util.Scanner;
public class LeftPascalTriangle {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter no of rows");
int n = sc.nextInt();
for (int i = 0; i < n; i++) {
for (int j = 0; j < n - i-1; j++) {
System.out.print(" ");
}
for (int j = 0; j <= i; j++) {
System.out.print("*");
}
System.out.println();
}
//printing lower half triangle
for (int i = n-1; i > 0; i--) {
for (int j = 0; j < n - i; j++) {
System.out.print(" ");
}
for (int j = 0; j <= i-1; j++) {
System.out.print("*");
}
System.out.println();
}
}
}
