Problem	bracketex
User	zyq69
Submission Time	2023-04-21 13:55:14
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

bracketex.cpp: In function ‘int main()’:
bracketex.cpp:19:6: error: ‘class std::stack<char>’ has no member named ‘push_back’
19 | S.push_back(c);
| ^~~~~~~~~