#include<stdio.h>
#include<stdlib.h>
/* 空心的倒三角形 */
/* written by Chen Gengru */
/* updated on 2018-11-17 */ 
int main()
{
	int a;
	scanf("%d", &a);
	int i, j, k;
	for (i = 0; i < 2*a-1; i++)
	{
		printf("*");
	}
	printf("\n");
	
	for (i = 1; i < a; i++)
	{
		for (j = 1; j <=
 
 i; j++)
		{
			printf(" ");
		}
		printf("*");
		for (k = 1; k <= 2*(a-i)-3; k++)
		{
			printf(" ");
		}
		if (i == a-1)
		{
			printf("\n");
		}
		else
		{
			printf("*\n");
		}
	}
	
	return 0;
}