#include <iostream>
using namespace std;
int main()
{
int n,p=-1, i, j;
cin>>n;
for (i=1;i<=n/2+1;++i) {
for (j=1;j<=n/2+1-i;++j){
cout<<" ";
}
cout<<"*";
for (j=1;j<=p;++j){
cout<<" ";
}
if (p>0) { cout<<"*";}
p+=2;cout<<"\n";
}
p=n-3;
for (i=1; i<=n/2; ++i)
{
for (j=1; j<=i; ++j)
cout << " ";
cout << "*";
for (j=1;j<p;++j){
cout<<" ";
}
if (p>0) { cout<<"*";}
p-=2;cout<<"\n";
}
}
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