#include<stdio.h>

int main() {
    int n;
    scanf("%d", &n);
    if(n<=0 || n>10 || n%2==0){
        printf("Invalid input");
        return 0;
    } 
    int st=n;
    int sp =0;
    while(st>0){
        for(int s=0;s<sp;s++){
            printf(" ");
        } 
        for(int j=0;j<st;j++){
            printf("*");
        }
        print("\n");
        sp += 1;
        st -=2;
    }
    return 0;
}