#include<iostream>
using namespace std;
int main()
{
    int n;
    cin>>n;
    if(n<0)
    {
        cout<<"Invalid input";
        return 0;
    }
    for(int k=0;k<=n;k++)
    {
    for(int i=k;i<=n-k;k++)
    {
        cout<<" ";
    }
     for(int j=1;j<=(2*i-1);j++)
     {
         cout<<"*";
     }
     cout<<endl;
    }
    return 0;
}