#include "testlib.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pll = pair<ll, ll>;
#define all(a) begin(a), end(a)
#define space inf.readChar(' ')
#define endl inf.readChar('\n')
#define eof inf.readEof()
tuple<ll> read(ll min, ll max){
    ll a = inf.readLong(min, max);
    endl;
    return tuple{a};
}
template<class... T> auto read(ll min, ll max, T... t){
    ll a = inf.readLong(min, max);
    space;
    return tuple_cat(tuple{a}, read(t...));
}
string read(string p){
    return inf.readLine(p);
}
vector<ll> reads(ll N, ll min, ll max){
    auto a = inf.readLongs(N, min, max);
    endl;
    return a;
}
vector<string> read_lines(ll N, string p){
    return inf.readLines(N, p);
}
template<class... T> auto read_lines(ll N, T... t){
    vector<decltype(read(t...))> a;
    a.reserve(N);
    while(N--) a.push_back(read(t...));
    return a;
}
vector<vector<ll>> read_matrix(ll H, ll W, ll min, ll max){
    vector<vector<ll>> ans(H);
    for(auto& v : ans) v = reads(W, min, max);
    return ans;
}

const int MIN_Q = 1;
const int MAX_Q = 800000;

int main() {
    registerValidation();
    int Q = inf.readInt(MIN_Q, MAX_Q);
    inf.readEoln();
    int s_len = 0;
    for (int i = 0; i < Q; ++i) {
        int type = inf.readInt(1, 2);
        if (type == 1) {
            inf.readSpace();
            char c = inf.readChar();
            ensure(c == '(' || c == '|' || c == ')');
            s_len++;
        }
        else {
            ensure(s_len > 0);
            s_len--;
        }
        inf.readEoln();
    }
    inf.readEof();
}