#include<stdio.h>
int main(){
    int n;
    if (scanf("%d", &n) !=1){
        printf("Invalid input");
        return 0;
    }
    if (n <= 0|| n % 2 == 0){
        printf("Invaild input");
        return 0;
    }
    int mid = n / 2;
    for (int i = 0; i < n; i++){
        int lastStar =  -1;
        for (int j = 0; j < n; j++){
            if (i == mid || j == mid)
            lastStar = j;
        }
        for (int j = 0; j <= lastStar; j++){
            if (int i == mid || j == mid)
            printf("*");
            else
            printf(" ");
        }
        if (i != n - 1)
        printf("\n");
    }
    return 0;
}