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