//PascalABC.NET 3.1 сборка 1239
var
brackets: array [0..2, 0..1] of char := (('{', '}'), ('[', ']'), ('(', ')'));
begin
var s := ReadlnString();
var counter := 0;
var max_depth := 0;
for var i := 1 to s.Length do
begin
if s[i] = '(' then counter += 1
else if s[i] = ')' then counter -= 1
else continue;
if counter < 0 then begin
writeln('brackets error');
Halt;
end;
if counter > max_depth then max_depth := counter;
end;
counter := 0;
for var i := 1 to s.Length do
begin
if s[i] = '(' then counter += 1
else if s[i] = ')' then counter -= 1
else continue;
if (counter = max_depth - 1) and (s[i] = '(') then s[i] := brackets[1, 0]
else if (counter = max_depth - 2) and (s[i] = ')') then s[i] := brackets[1, 1]
else if (counter = max_depth - 2) and (s[i] = '(') then s[i] := brackets[0, 0]
else if (counter = max_depth - 3) and (s[i] = ')') then s[i] := brackets[0, 1];
end;
writeln(s);
end.