Problem	conversations
User	r1r2r3r4
Submission Time	2025-07-16 17:01:14
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

conversations.cpp: In function ‘int main()’:
conversations.cpp:30:20: error: invalid use of member function ‘bool std::deque<_Tp, _Alloc>::empty() const [with _Tp = long long int; _Alloc = std::allocator<long long int>]’ (did you forget the ‘()’ ?)
30 | if (st.empty == true) cout << -1 << "\n";
| ~~~^~~~~
| ()