// Jai Shree Ram  
  
#include<bits/stdc++.h>
using namespace std;

#define rep(i,a,n)     for(int i=a;i<n;i++)
#define ll             long long
#define int            long long
#define pb             push_back
#define all(v)         v.begin(),v.end()
#define endl           "\n"
#define x              first
#define y              second
#define gcd(a,b)       __gcd(a,b)
#define mem1(a)        memset(a,-1,sizeof(a))
#define mem0(a)        memset(a,0,sizeof(a))
#define sz(a)          (int)a.size()
#define pii            pair<int,int>
#define hell           1000000007
#define elasped_time   1.0 * clock() / CLOCKS_PER_SEC



template<typename T1,typename T2>istream& operator>>(istream& in,pair<T1,T2> &a){in>>a.x>>a.y;return in;}
template<typename T1,typename T2>ostream& operator<<(ostream& out,pair<T1,T2> a){out<<a.x<<" "<<a.y;return out;}
template<typename T,typename T1>T maxs(T &a,T1 b){if(b>a)a=b;return a;}
template<typename T,typename T1>T mins(T &a,T1 b){if(b<a)a=b;return a;}


int solve(){
 		int n; cin >> n;
 		vector<pair<int,pii>> vec1, vec2;
 		for(int i = 0; i < n; i++){
 			string s; cin >> s;
 			int bal = 0, mn = 0;
 			for(auto j: s){
 				if(j == '(') bal++;
 				else bal--;
 				mins(mn,bal);
 			}
 			if(bal > 0){
 				vec1.push_back({i,{bal,mn}});
 			}else{
 				vec2.push_back({i,{bal,mn}});
 			}
 		}
 		sort(all(vec1),[&](auto &a, auto &b){
 			return a.y.y > b.y.y;
 		});
 		sort(all(vec2),[&](auto &a, auto &b){
 			return a.y.y < b.y.y;
 		});
 		int sum = 0;
 		vector<int> ans;
 		for(auto [i,p]: vec1){
 			auto [bal,mn] = p;
 			if(sum + mn < 0){
 				cout << "impossible" << endl;
 				return 0;
 			} 
 			ans.push_back(i + 1);
 			sum += bal;
 		}
 		for(auto [i,p]: vec2){
 			auto [bal,mn] = p;
 			if(sum + mn < 0){
 				cout << "impossible" << endl;
 				return 0;
 			} 
 			ans.push_back(i + 1);
 			sum += bal;
 		}
 		if(sum != 0){
 			cout << "impossible" << endl;
 			return 0;
 		}
 		for(auto i: ans) cout << i << endl;
 return 0;
}
signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    #ifdef SIEVE
    sieve();
    #endif
    #ifdef NCR
    init();
    #endif
    int t=1;//cin>>t;
    while(t--){
        solve();
    }
    return 0;
}