#include<stdio.h>

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