program jihe(input,output);
type
  shuji=set of 1..10;
var
  shuji1,shuji2,shuji3:shuji;
  a:integer;
begin
  shuji1:=[3,4,5];
  shuji2:=[6,8,4];
  shuji3:=shuji1+shuji2;
  repeat
    read(a);
    if (a in shuji3) then writeln('yes')
                     else writeln('no');
  until a=-1;
end.