worldmap.cpp: In function 'void dfs(int)':
worldmap.cpp:10:23: error: 'begin' was not declared in this scope
10 | for (int v : adj[u]) {
| ^
worldmap.cpp:10:23: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from worldmap.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 worldmap.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 worldmap.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 worldmap.cpp:1:
/usr/include/c++/11/bits/iterator_concepts.h:949:10: note: 'std::ranges::__cust_access::begin'
949 | void begin(const auto&) = delete;
| ^~~~~
worldmap.cpp:10:23: error: 'end' was not declared in this scope
10 | for (int v : adj[u]) {
| ^
worldmap.cpp:10:23: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:95,
from worldmap.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 worldmap.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 worldmap.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 worldmap.cpp:1:
/usr/include/c++/11/bits/ranges_base.h:136:10: note: 'std::ranges::__cust_access::end'
136 | void end(const auto&) = delete;
| ^~~
worldmap.cpp: In function 'std::vector<std::vector<int> > create_map(int, int, std::vector<int>, std::vector<int>)':
worldmap.cpp:23:12: error: request for member 'clear' in 'adj[i]', which is of non-class type 'int'
23 | adj[i].clear();
| ^~~~~
worldmap.cpp:26:15: error: request for member 'push_back' in 'adj[a.std::vector<int>::operator[](((std::vector<int>::size_type)i))]', which is of non-class type 'int'
26 | adj[a[i]].push_back(b[i]);
| ^~~~~~~~~
worldmap.cpp:27:15: error: request for member 'push_back' in 'adj[b.std::vector<int>::operator[](((std::vector<int>::size_type)i))]', which is of non-class type 'int'
27 | adj[b[i]].push_back(a[i]);
| ^~~~~~~~~
worldmap.cpp:39:32: error: request for member 'size' in 'adj[path.std::vector<int>::operator[](((std::vector<int>::size_type)i))]', which is of non-class type 'int'
39 | for(int j=0;j<adj[path[i]].size();j++){
| ^~~~
worldmap.cpp:41:31: error: invalid types 'int[int]' for array subscript
41 | u.push_back(adj[path[i]][j]);
| ^
worldmap.cpp:43:30: error: request for member 'size' in 'adj[path.std::vector<int>::operator[](((std::vector<int>::size_type)i))]', which is of non-class type 'int'
43 | for(int j=2*adj[path[i]].size()+1;j<=path.size()*3;j++){
| ^~~~