#include <string>
#include <algorithm>
#include <vector>
#include <iostream>

using namespace std;

int main()
{
    string s;
    int open = 0, open_after = 0, close = 0;
    int close_i, open_i = 0;
    bool flag = true;
    cin >> s;
    for (int i = 0; i < s.length(); i++)
    {
        if (s[i] == '(' && flag)
            open++;
        else
            if (s[i] == ')')
            {
                flag = false;
                close++;
            }
            else
                open_after++;
    }
    if (open_after == 0)
        for (int i = 0; i < 2 * close; i++)
            if (i % 2 == 0)
                cout << '(';
            else
                cout << ')';
    else
    {
        int open = 0, close = 0;
        int i = s.length() - 1;
        while (s[i] == ')')
            i--;
        s.erase(i, 1);
        i--;
        while (s[i] == '(')
            i--;
        s.insert(i, "()");
        i += 3;
        int f = i;
        s.erase(s.length() - 1, 1);
        while (i < s.length())
        {
            if (s[i] == '(')
                open++;
            else
                close++;
            i++;
        }
        int m = min(open, close);
        open = min(open, close);
        close = min(open, close);
        i = s.length() - 1;
        while (open > 0 || close > 0)
        {
            if (i < s.length() && s[i] == '(' && open > 0)
            {
                open--;
                s.erase(i, 1);
            }
            if (i < s.length() && s[i] == ')' && close > 0)
            {
                close--;
                s.erase(i, 1);
            }

            i--;

        }
        string t = "";
        for (int j = 0; j < m * 2; j++)
            if (j % 2 == 0)
                t += '(';
            else
                t += ')';
        s.insert(f, t);
        cout << s;
    }
}