supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:6:48: error: 'vector' was not declared in this scope
6 | std::vector<std::vector<int>> answer(n,vector<int>(n,0));
| ^~~~~~~~~~~
supertrees.cpp:6:48: note: suggested alternatives:
In file included from /usr/include/c++/11/vector:67,
from supertrees.h:1,
from supertrees.cpp:1:
/usr/include/c++/11/bits/stl_vector.h:389:11: note: 'std::vector'
389 | class vector : protected _Vector_base<_Tp, _Alloc>
| ^~~~~~
In file included from supertrees.h:1,
from supertrees.cpp:1:
/usr/include/c++/11/vector:86:13: note: 'std::pmr::vector'
86 | using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
| ^~~~~~