Scanner scan = new Scanner(System.in);
int n =scan.nextInt();
int rows=1;
int nsp=0;
int nst=n*2+1;
int mnsp=n;
int nsp2=n-1;
int nst2=n/2;
//upper half
while(rows<=2*n+1)
{
if(rows<=(n*2+1)/2)
{
for(int csp=1;csp<=nsp;csp++)
{
System.out.print(" "+" ");
}
nsp++;
for(int cst=1;cst<=nst;cst++)
{
System.out.print("*"+" ");
}
nst=nst-2;
}
else if(rows==((2*n+1)/2)+1)
{
for(int csp=1;csp<=mnsp;csp++)
{
System.out.print(" "+" ");
}
System.out.print("*"+" ");
}
else
{
for(int csp=1;csp<=nsp2;csp++)
{
System.out.print(" "+" ");
}
nsp2--;
for(int cst=1;cst<=nst2;cst++)
{
System.out.print("*"+" ");
}
nst2=nst2+2;
}
System.out.println();
rows++;
}