Problem	party_noi
User	liliputian
Submission Time	2026-10-02 23:40:33
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

party_noi.cpp: In function ‘int main()’:
party_noi.cpp:8:19: error: ‘floor’ is not a member of ‘std’
8 | L friends = std::floor((n + 1)/2);
| ^~~~~