#include <stdio.h>

int main() {
    int i,j,n;
    do {
    printf("Unesite broj N:");
        scanf("%d",&n);


        if(n%4!=1)
        {

                printf (" N nije ispravno!\n");
        }

    }
    while(n%4!=1);
    printf("\n");
    for(i=0;i<n;i++)
    {
        for(j=0;j<n;j++)
        {
            if(i%2==0 &&(j>=i-1&&j<=n-1-i||j>=n-1-i&&j<=i)||j%2==0&&(i>=j+2 &&i<=n-1-j ||i>=n-1-j &&i<=j))
            {
                printf("*");
            }
            else
            {
                printf(" ");


            }
        }
        printf("\n");
    }
    return 0;
}