Problem	conversations
User	YSH2020
Submission Time	2025-11-28 20:48:00
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

conversations.cpp: In function ‘int main()’:
conversations.cpp:14:100: error: ‘class std::map<int, int>’ has no member named ‘pop_back’
14 | while (del.find(conv.back().first)!=del.end() && del[conv.back().first]>conv.back().second) del.pop_back();
| ^~~~~~~~