#include <stdio.h>
int main()
{
    int n = 0;
    while(~scanf("%d", &n))
    {
        int i = 0;
        int j = 0;
        for(i = 0; i < n; i++)
        {
            for(j = 0; j <= i; j++)
            {
                if(j == 0 || i == n - 1 || i == j)
                {
                    printf("* ");
                }
                else
                {
                    printf("  ");
                
                }
            }    
            printf("\n");    
        }
    }
    return 0;
}