var
s1,s2: string;
i: integer;
begin
ReadLn(s1);
ReadLn(s2);
for i := Length(s1) downto 1 do
if Pos(s1[i], s2) <> 0 then
Delete(s1, i, 1);
WriteLn(s1);
ReadLn
end.
var
s1,s2: string;
i: integer;
begin
ReadLn(s1);
ReadLn(s2);
for i := Length(s1) downto 1 do
if Pos(s1[i], s2) <> 0 then
Delete(s1, i, 1);
WriteLn(s1);
ReadLn
end.