#include<iostream>
#include<cmath>
using namespace std;
int main()
{
    int n;
    cin>>n;
    int cx=n/2,cy=n/2;
    for(int i=0;i<n;i++)
    {
        for(int k=0;k<n;k++)
        if(abs(i-cx)+abs(k-cy)<=n/2)
        cout<<'*';
        else
        cout <<' ';
    cout<<endl;
    }

    return 0;
}