supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:61:32: error: request for member 'push_back' in 'small_comp', which is of non-class type 'int'
61 | small_comp.push_back(u);
| ^~~~~~~~~
supertrees.cpp:63:28: error: request for member 'empty' in 'small_comp', which is of non-class type 'int'
63 | if (small_comp.empty()) continue;
| ^~~~~
supertrees.cpp:66:26: error: 'begin' was not declared in this scope
66 | for (int v : small_comp)
| ^~~~~~~~~~
supertrees.cpp:66:26: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from supertrees.cpp:1:
/usr/include/c++/11/valarray:1228:5: note: 'std::begin'
1228 | begin(const valarray<_Tp>& __va) noexcept
| ^~~~~
In file included from /usr/include/c++/11/string_view:48,
from /usr/include/c++/11/bits/basic_string.h:48,
from /usr/include/c++/11/string:55,
from /usr/include/c++/11/bits/locale_classes.h:40,
from /usr/include/c++/11/bits/ios_base.h:41,
from /usr/include/c++/11/ios:42,
from /usr/include/c++/11/istream:38,
from /usr/include/c++/11/sstream:38,
from /usr/include/c++/11/complex:45,
from /usr/include/c++/11/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
from supertrees.cpp:1:
/usr/include/c++/11/bits/ranges_base.h:561:44: note: 'std::ranges::__cust::begin'
561 | inline constexpr __cust_access::_Begin begin{};
| ^~~~~
In file included from /usr/include/c++/11/filesystem:46,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:129,
from supertrees.cpp:1:
/usr/include/c++/11/bits/fs_dir.h:549:3: note: 'std::filesystem::__cxx11::begin'
549 | begin(recursive_directory_iterator __iter) noexcept
| ^~~~~
In file included from /usr/include/c++/11/bits/stl_iterator_base_types.h:71,
from /usr/include/c++/11/bits/stl_algobase.h:65,
from /usr/include/c++/11/bits/specfun.h:45,
from /usr/include/c++/11/cmath:1935,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
from supertrees.cpp:1:
/usr/include/c++/11/bits/iterator_concepts.h:949:10: note: 'std::ranges::__cust_access::begin'
949 | void begin(const auto&) = delete;
| ^~~~~
supertrees.cpp:66:26: error: 'end' was not declared in this scope
66 | for (int v : small_comp)
| ^~~~~~~~~~
supertrees.cpp:66:26: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from supertrees.cpp:1:
/usr/include/c++/11/valarray:1255:5: note: 'std::end'
1255 | end(const valarray<_Tp>& __va) noexcept
| ^~~
In file included from /usr/include/c++/11/string_view:48,
from /usr/include/c++/11/bits/basic_string.h:48,
from /usr/include/c++/11/string:55,
from /usr/include/c++/11/bits/locale_classes.h:40,
from /usr/include/c++/11/bits/ios_base.h:41,
from /usr/include/c++/11/ios:42,
from /usr/include/c++/11/istream:38,
from /usr/include/c++/11/sstream:38,
from /usr/include/c++/11/complex:45,
from /usr/include/c++/11/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
from supertrees.cpp:1:
/usr/include/c++/11/bits/ranges_base.h:562:42: note: 'std::ranges::__cust::end'
562 | inline constexpr __cust_access::_End end{};
| ^~~
In file included from /usr/include/c++/11/filesystem:46,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:129,
from supertrees.cpp:1:
/usr/include/c++/11/bits/fs_dir.h:554:3: note: 'std::filesystem::__cxx11::end'
554 | end(recursive_directory_iterator) noexcept
| ^~~
In file included from /usr/include/c++/11/string_view:48,
from /usr/include/c++/11/bits/basic_string.h:48,
from /usr/include/c++/11/string:55,
from /usr/include/c++/11/bits/locale_classes.h:40,
from /usr/include/c++/11/bits/ios_base.h:41,
from /usr/include/c++/11/ios:42,
from /usr/include/c++/11/istream:38,
from /usr/include/c++/11/sstream:38,
from /usr/include/c++/11/complex:45,
from /usr/include/c++/11/ccomplex:39,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
from supertrees.cpp:1:
/usr/include/c++/11/bits/ranges_base.h:136:10: note: 'std::ranges::__cust_access::end'
136 | void end(const auto&) = delete;
| ^~~
supertrees.cpp:73:77: warning: pointer to a function used in arithmetic [-Wpointer-arith]
73 | output[roots[i]][roots[(i + 1) % sz]] = output[root[(i + 1) % sz]][i] = 1;
| ^
supertrees.cpp:73:77: error: invalid conversion from 'int (*)(int, int)' to 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-fpermissive]
73 | output[roots[i]][roots[(i + 1) % sz]] = output[root[(i + 1) % sz]][i] = 1;
| ~~~~~~~~~~~~~~~~~^
| |
| int (*)(int, int)
In file included from /usr/include/c++/11/vector:67,
from /usr/include/c++/11/functional:62,
from /usr/include/c++/11/pstl/glue_algorithm_defs.h:13,
from /usr/include/c++/11/algorithm:74,
from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:65,
from supertrees.cpp:1:
/usr/include/c++/11/bits/stl_vector.h:1043:28: note: initializing argument 1 of '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]'
1043 | operator[](size_type __n) _GLIBCXX_NOEXCEPT
| ~~~~~~~~~~^~~