#include <stdio.h>
void printInvertedPyrmid(int n)
{
    if (n <= 0 || n % 2 == 0){
        printf("Invalid Input\n");
        return;
    }
    for (int i = n; i >= 1; i -= 2) {
        for (int j = 0; j < (n - i) / 2; j++) {
            printf(" ");
        }
        for (int k = 0; k <i; k++) {
            printf("*");
        }
        printf("\n");
    }
}
int main() {
    int n;
    scanf("%d",&n);
    PrintInvertedPyrmid(n);
    return 0;
}