program nguyen_to;

uses crt;

var n,m,i:integer;

{---Ham-nguyen-to---}

function ktnt(k:integer):boolean;

var r:integer;

begin

      ktnt:=false;

      if k<2 then exit;

      for r:=2 to trunc(sqrt(k)) do

            if k mod r=0 then exit;

      ktnt:=true;

end;

{---CT-chinh---}

BEGIN

      clrscr;

      write('Nhap n: ');  readln(n);

      write('Nhap m: ');  readln(m);

      for i:=n to m do

            if ktnt(i) then write(i,' ');

      readln;

end.