#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
typedef long double db;
typedef long long ll;

const ll N = 2e5 + 10;
const ll mod = 998244353;
const ll inf32 = 0x3f3f3f3f;
const ll inf64 = 5e18;

void solve(){
    string s;
    cin >> s;
    int n = s.size();
    if (s[n - 1] == '(') {
        cout << "impossible" << endl;
        return;
    }
    int pos = n - 1;
    for (int i = n - 1; i >= 0; --i){
        if (s[i] == '(') {
            pos = i + 1;
            break;
        }
    }
    cout << s.substr(0, pos) << endl;
}

signed main(){
    ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
    int t = 1;
    cin >> t;
    while(t--) solve();
    return 0;
}