var x1,y1,x2,y2,x3,y3,i,n,s:longint;
begin
readln(n);
readln(x1,y1);
readln(x2,y2);
for i:=3 to n do
 begin
  readln(x3,y3);
   s:=s+((x3-x2)*(y1-y2))-((x1-x2)*(y3-y2));
  x1:=x2;y1:=y2;
  x2:=x3;y2:=y3;
 end;
if s>0 then write('ccw') else write('cw');
end.