9012 괄호 #include using namespace std; int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); int num_case; cin >> num_case; for (int i = 0; i > input; for (int j = 0; j < input.length(); ++j) { if (st.empty() || input[j] == '(') st.push_back(input[j]); else if (st.front() == '(') st.pop_back(); } if (st.empty()) cout
