#include<stdio.h>

void print_inverted_pyramid(int n)
{
    if(n%2==0){
        printf("Invalid Input")
        return;
    }
    for(int i=n;i>0;i=-2){
        printf(" ");
    }
    for(int j=0;j<i;j++){
        printf("*");
    }
    printf("\n");
}
}
int main(){
    int n;
    scanf("%d",&n);
    printf_inverted_pyramid(n);
    return 0;
}