#include <iostream>
using namespace std;
int N;
int main()
{
cin>>N;
for(int x=1; x<=N; x++)
{
for(int y=1; y<=N-x; y++) cout<<" ";
for(int y=1; y<=2*x-1; y++)cout<<"*";
cout<<endl;
}
for(int x=N-1; x>=1; x--)
{
for(int y=1; y<=N-x; y++) cout<<" ";
for(int y=1; y<=2*x-1; y++)cout<<"*";
cout<<endl;
}
}