Problem	triusis
User	chenweilian
Submission Time	2025-08-16 16:47:55
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

triusis.cpp: In function ‘void solve()’:
triusis.cpp:21:34: error: ‘xq’ was not declared in this scope
21 | if (it != s.end()) s.erase(it);xq
| ^~