Problem	september
User	shenshiqi
Submission Time	2026-01-04 11:23:32
Score	0
Max Time	N/A
Max Memory	N/A

Compile Error

september.cpp: In function ‘int solve(int, int, std::vector<int>, std::vector<std::vector<int> >)’:
september.cpp:7:2: error: ‘vector’ was not declared in this scope
7 | vector < set <ll> > children(N);
| ^~~~~~
september.cpp:7:2: note: suggested alternatives:
In file included from /usr/include/c++/9/vector:67,
from september.h:1,
from september.cpp:1:
/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 september.h:1,
from september.cpp:1:
/usr/include/c++/9/vector:90:13: note: ‘std::pmr::vector’
90 | using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
| ^~~~~~
september.cpp:7:11: error: ‘set’ was not declared in this scope
7 | vector < set <ll> > ch