Problem	ccs
User	huangchengcheng
Submission Time	2026-07-16 16:56:32
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

ccs.cpp: In function ‘int main()’:
ccs.cpp:20:25: error: ‘x’ was not declared in this scope
20 | sleep.erase(x);
| ^