A

#include <stdio.h>
#include <stdlib.h>

int main()
{
       int n;
    scanf("%d", &n);
    int i,j;
    for(i = 1; i <= n; i++) {
        for(j = 1; j <= n; j++) {
            if(i + j == n || (i == n/2 && j > n/2)) printf("*");
            else printf(" ");
        }
        for(j = 1; j <= n-1; j++) {
            if(i == j || (i == n/2 && j < n/2)) printf("*");
            else printf(" ");
        }
    return 0;
}