coolrussianm program mnoga;
var
  x, y: integer;
begin
read(x, y);
if ((y<0) and (sqr(x - 3) + sqr(y)<1) or ((y>0) and (y<2) and (sqr(x - 3) + sqr(y)>1))) then
  writeln('YES')
else
  writeln('NO')
end.