#include <stdio.h>

int n, m[110][110];
int abs(int a){ return a>0?a:-a; }
int main()
{
    freopen(".10.in","r",stdin);
    freopen(".10.out","w",stdout);
    scanf("%d", &n);
    for(int i = 0 ; i < n ; i++ )
    {
        for(int j = 0 ; j < 2*((n/2+1)-abs(n/2-(i)))-1 ; j++ )
            m[i][j+abs(n/2-(i))] = 1;
    }
    for(int i = 0 ; i < n ; i++, puts(""))
        for(int j = 0 ; j < n ; j++ )
            printf("%c", m[i][j]?'*':'.');
}