#include <iostream>

using namespace std;

int main()
{
int i,j,n;
cin>>n;
for(i=1;i<=n;i++)
{for(j=1;j<=n;j++)
{
if(i%2==1&& j%2==1)
cout<<„* „;
if(i%2==0 && j%2==0)
cout<<“ *“;}
cout<<endl;
}
return 0;
}