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