#include <stdio.h>

int main() {
    int a;
    while (scanf("%d", &a) != EOF) {
        for (int i = 1; i <= a; i++) {
            for(int j = 1; j<= a; j++){
                if(j==i||j==a-i+1){
                    printf("*");
                }else{
                    printf(" ");
                }
            }
            printf("\n");
        }
    }
    return 0;
}