Borderou de evaluare (job #856030)

Eroare de compilare: main.cpp:9:85: error: conflicting declaration 'typedef class __gnu_pbds::tree<int, __gnu_pbds::null_type, std::less<int>, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update> ordered_set' 9 | typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set; | ^~~~~~~~~~~ main.cpp:8:105: note: previous declaration as 'typedef class __gnu_pbds::tree<std::pair<int, int>, __gnu_pbds::null_type, std::less<std::pair<int, int> >, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update> ordered_set' 8 | typedef tree<pair<int,int>,null_type,less<pair<int,int>>,rb_tree_tag,tree_order_statistics_node_update> ordered_set; | ^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:17:39: error: '__gnu_pbds::tree_order_statistics_node_update<__gnu_pbds::detail::bin_search_tree_const_node_it_<__gnu_pbds::detail::rb_tree_node_<std::pair<int, int>, long unsigned int, std::allocator<char> >, __gnu_pbds::detail::bin_search_tree_const_it_<__gnu_pbds::detail::rb_tree_node_<std::pair<int, int>, long unsigned int, std::allocator<char> >*, std::pair<int, int>, std::pair<int, int>*, const std::pair<int, int>*, std::pair<int, int>&, const std::pair<int, int>&, true, std::allocator<char> >, __gnu_pbds::detail::bin_search_tree_const_it_<__gnu_pbds::detail::rb_tree_node_<std::pair<int, int>, long unsigned int, std::allocator<char> >*, std::pair<int, int>, std::pair<int, int>*, const std::pair<int, int>*, std::pair<int, int>&, const std::pair<int, int>&, true, std::allocator<char> >, std::allocator<char> >, __gnu_pbds::detail::bin_search_tree_const_node_it_<__gnu_pbds::detail::rb_tree_node_<std::pair<int, int>, long unsigned int, std::allocator<char> >, __gnu_pbds::detail::bin_search_tree_const_it_<__gnu_pbds::detail::rb_tree_node_<std::pair<int, int>, long unsigned int, std::allocator<char> >*, std::pair<int, int>, std::pair<int, int>*, const std::pair<int, int>*, std::pair<int, int>&, const std::pair<int, int>&, true, std::allocator<char> >, __gnu_pbds::detail::bin_search_tree_const_it_<__gnu_pbds::detail::rb_tree_node_<std::pair<int, int>, long unsigned int, std::allocator<char> >*, std::pair<int, int>, std::pair<int, int>*, const std::pair<int, int>*, std::pair<int, int>&, const std::pair<int, int>&, true, std::allocator<char> >, std::allocator<char> >, std::less<std::pair<int, int> >, std::allocator<char> >::iterator' {aka 'class __gnu_pbds::detail::bin_search_tree_const_it_<__gnu_pbds::detail::rb_tree_node_<std::pair<int, int>, long unsigned int, std::allocator<char> >*, std::pair<int, int>, std::pair<int, int>*, const std::pair<int, int>*, std::pair<int, int>&, const std::pair<int, int>&, true, std::allocator<char> >'} has no member named 'first' 17 | cout<<*a.find_by_order(j).first<<'\n'; | ^~~~~