supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:83:20: error: no match for 'operator[]' (operand types are 'std::vector<std::vector<int> >' and 'std::vector<int>')
83 | for (auto j:trees[i])
| ^
In file included from /usr/include/c++/9/vector:67,
from supertrees.h:1,
from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_vector.h:1040:7: note: candidate: 'std::vector<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](std::vector<_Tp, _Alloc>::size_type) [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; std::vector<_Tp, _Alloc>::reference = std::vector<int>&; std::vector<_Tp, _Alloc>::size_type = long unsigned int]'
1040 | operator[](size_type __n) _GLIBCXX_NOEXCEPT
| ^~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1040:28: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'}
1040 | operator[](size_type __n) _GLIBCXX_NOEXCEPT
| ~~~~~~~~~~^~~
/usr/include/c++/9/bits/stl_vector.h:1058:7: note: candidate: 'std::vector<_Tp, _Alloc>::const_reference std::vector<_Tp, _Alloc>::operator[](std::vector<_Tp, _Alloc>::size_type) const [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; std::vector<_Tp, _Alloc>::const_reference = const std::vector<int>&; std::vector<_Tp, _Alloc>::size_type = long unsigned int]'
1058 | operator[](size_type __n) const _GLIBCXX_NOEXCEPT
| ^~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1058:28: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'}
1058 | operator[](size_type __n) const _GLIBCXX_NOEXCEPT
| ~~~~~~~~~~^~~
supertrees.cpp:85:7: error: no match for 'operator[]' (operand types are 'std::vector<std::vector<int> >' and 'std::vector<int>')
85 | ans[i][j]=1;
| ^
In file included from /usr/include/c++/9/vector:67,
from supertrees.h:1,
from supertrees.cpp:1:
/usr/include/c++/9/bits/stl_vector.h:1040:7: note: candidate: 'std::vector<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::operator[](std::vector<_Tp, _Alloc>::size_type) [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; std::vector<_Tp, _Alloc>::reference = std::vector<int>&; std::vector<_Tp, _Alloc>::size_type = long unsigned int]'
1040 | operator[](size_type __n) _GLIBCXX_NOEXCEPT
| ^~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1040:28: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'}
1040 | operator[](size_type __n) _GLIBCXX_NOEXCEPT
| ~~~~~~~~~~^~~
/usr/include/c++/9/bits/stl_vector.h:1058:7: note: candidate: 'std::vector<_Tp, _Alloc>::const_reference std::vector<_Tp, _Alloc>::operator[](std::vector<_Tp, _Alloc>::size_type) const [with _Tp = std::vector<int>; _Alloc = std::allocator<std::vector<int> >; std::vector<_Tp, _Alloc>::const_reference = const std::vector<int>&; std::vector<_Tp, _Alloc>::size_type = long unsigned int]'
1058 | operator[](size_type __n) const _GLIBCXX_NOEXCEPT
| ^~~~~~~~
/usr/include/c++/9/bits/stl_vector.h:1058:28: note: no known conversion for argument 1 from 'std::vector<int>' to 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'}
1058 | operator[](size_type __n) const _GLIBCXX_NOEXCEPT
| ~~~~~~~~~~^~~