program Project2;

{$APPTYPE CONSOLE}

uses
  SysUtils;
 const k=12; l=12;
 var n,s,s1,i:integer;x,y:text; q:string;

begin
  { TODO -oUser -cConsole Main : Insert code here }
  assign(x,'mathes.in');
  assign(y,'mathes.out');
  reset(x);
  read(x,n);

  s:=0;
  for i:=1 to k do
  s1:=s+1 ;
   n:=s1*l;
  if (n<=1000000000) then q:=('yas');
  if (n >1000000000) then q:=('no');
  rewrite(y);
  write(y,q);
  close(x);
  close(y);
end.