#include <iostream>
using namespace std;
int n,i,j,k;
int main()
{
cin >> n;
k=n;
for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
cout << "*";
cout << endl;
}
for(i=n;i>=1;i--)
{
for(j=1;j<=k;j++)
cout << " ";
for(j=1;j<=i;j++)
cout << "*";
cout << endl;
k++;
}
return 0;
}