Problem	lunchbox
User	Daembt
Submission Time	2026-01-08 21:35:46
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

lunchbox.cpp: In function ‘int main()’:
lunchbox.cpp:8:2: error: ‘vector’ was not declared in this scope
8 | vector<int> a(len); //?
| ^~~~~~
lunchbox.cpp:8:2: note: suggested alternatives:
In file included from /usr/include/c++/9/vector:67,
from /usr/include/c++/9/functional:62,
from /usr/include/c++/9/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/9/algorithm:71,
from lunchbox.cpp:2:
/usr/include/c++/9/bits/stl_vector.h:386:11: note: ‘std::vector’
386 | class vector : protected _Vector_base<_Tp, _Alloc>
| ^~~~~~
In file included from /usr/include/c++/9/functional:62,
from /usr/include/c++/9/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/9/algorithm:71,
from lunchbox.cpp:2:
/usr/include/c++/9/vector:90:13: note: ‘std::pmr::vector’
90 | using vec