#include <stdio.h>
int main(){
    scanf("%d", &n);
    if (n <= 0 || n > 10 || n % 2 == 0) {
        printf("Invalid Input");
        return 0;
    } 
    for (int i = n; i >= 1; -=2) {
        int spaces = (n -i)/2;
    }
    for (int j = 0; j < i; j++) {
        printf("");
    }    
    for (int j = 0; j < i; j++) {
        printf("*");
    }    
    printf("\n");
  }
  return 0;
}