#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 j=0;j<n;j++)
if(abs(i-cx)+abs(j-cy)<=n/2)cout<<"*";
else cout<<" ";
cout<<endl;
}
return 0;
}