Problem	bracketex
User	zhiyan
Submission Time	2026-10-08 23:36:13
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

bracketex.cpp: In function ‘int main()’:
bracketex.cpp:48:15: error: missing template arguments before ‘.’ token
48 | if (!stack.empty()) v = "Invalid";
| ^