program tmp; uses crt; var m,i:longint; function simple(n:longint):boolean; var i:longint; begin simple:=true; for i:=2 to round(sqrt(n)) do if n mod i=0 then begin simple:=false; break; end; end; begin clrscr; write('enter n: '); readln(n); for i:=2 to n do if simple(i) then write(i,' '); readkey; end.