Problem	lunchbox
User	Dam
Submission Time	2023-01-09 10:20:40
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

lunchbox.cpp: In function ‘int main()’:
lunchbox.cpp:20:10: error: ‘sort’ is not a member of ‘std’
20 | std::sort(k, k + length);
| ^~~~