var
n,i,j,k,f:longint;
begin
readln(n);
if n = 1 then
writeln('*');
if n > 1 then
begin
f:=n-2;
for i:= 1 to n-1 do
write(' ');
for i:= 1 to n do
write('*');
writeln;
for i:= 1 to n-2 do
 begin
  for j:= 1 to f do
   begin
    write(' ');
   end;
f:=f-1;
write('*');
for k:=1 to n-2 do
write(' ');
write('*');
writeln;
end;
for i:=1 to n do
write('*');
writeln
end;
end.