Program ff12_17; var n:longint; m:set of 0..9; i: 0..9; BEGIN writeln('â楨塷鲫; readln(n); m:=[]; while n<>0 do begin m:=m+[n mod 10]; n:=n div 10; end; for i:=0 to 9 do if i In m then write(i : 3); readln; END.