program sramoc;
var
  i,j,k,m,n:longint;
  l:int64;
function pan(const x:int64):boolean;
var
  i:longint;
  j:int64;
begin
  j:=x;
  while j<>0  do
  begin
    i:=j mod 10;
    if i>=k then
      exit(false);
    j:=j div 10;
  end;
  exit(true);
end;
begin
  assign(input,'sramoc.in');
  reset(input);
  assign(output,'sramoc.out');
  rewrite(output);
  readln(k,m);
  i:=1;
  while 1=1 do
  begin
    l:=m*i;
    if pan(l) then
    begin
      writeln(l);
      break;
    end;
    inc(i);
  end;
  close(input);
  close(output);
end.