#include <iostream>

using namespace std;

int main()
{
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<=i;j++)
            cout<<'*';
        cout<<endl;
    }
    for(int i=n;i>=1;i--)
    {
        for(int j=1;j<=n;j++)
            cout<<" ";
        for(int j=1;j<=n-i;j++)
            cout<<" ";
        for(int j=1;j<=i;j++)
            cout<<'*';
        cout<<endl;
    }
    return 0;
}