#include <bits/stdc++.h> #define GOOD_LUCK ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); #define ll long long #define itn int #define INF 100000000 #define MOD 998244353 #define MAX 103 #define endl "\n" #define ff first #define ss second using namespace std; int temp; signed main() { GOOD_LUCK int t; t = 1; // cin >> t; while (t--) { int n; string a; cin >> a; n = a.size(); if (n % 2 != 0) { cout << -1; return 0; } stack <char> s; map <char, int> m; for (int i=0; i < n; i++) { m[a[i]]++; if (s.empty()) s.push(a[i]); else if (s.top() == a[i]) s.pop(); else s.push(a[i]); } /*for (auto i : m) { cout << i.ff << ' ' << i.ss; cout << endl; }*/ if (s.empty()) { for (auto i : m) { if (i.ss % 2 != 0) { cout << -1; return 0; } } string ans = ""; for (int i=0; i < n; i++) { if (m[a[i]] > 0) { ans = ans + '('; m[a[i]]-=2; } else { ans += ')'; } } cout << ans; } else { cout << -1; } } return 0; } // Problem C // by Ekber_Ekber