Eroare de compilare: user.cpp: In function ‘void unite(int, int)’: user.cpp:26:6: error: reference to ‘rank’ is ambiguous if (rank[x] > rank[y]) ^ user.cpp:8:29: note: candidates are: std::vector<int> rank vector<int> parent(100001), rank(100001); ^ In file included from /usr/include/c++/4.8/bits/move.h:57:0, from /usr/include/c++/4.8/bits/stl_pair.h:59, from /usr/include/c++/4.8/bits/stl_algobase.h:64, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:2: /usr/include/c++/4.8/type_traits:1243:12: note: template<class> struct std::rank struct rank ^ user.cpp:26:16: error: reference to ‘rank’ is ambiguous if (rank[x] > rank[y]) ^ user.cpp:8:29: note: candidates are: std::vector<int> rank vector<int> parent(100001), rank(100001); ^ In file included from /usr/include/c++/4.8/bits/move.h:57:0, from /usr/include/c++/4.8/bits/stl_pair.h:59, from /usr/include/c++/4.8/bits/stl_algobase.h:64, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:2: /usr/include/c++/4.8/type_traits:1243:12: note: template<class> struct std::rank struct rank ^ user.cpp:30:6: error: reference to ‘rank’ is ambiguous if (rank[x] == rank[y]) ^ user.cpp:8:29: note: candidates are: std::vector<int> rank vector<int> parent(100001), rank(100001); ^ In file included from /usr/include/c++/4.8/bits/move.h:57:0, from /usr/include/c++/4.8/bits/stl_pair.h:59, from /usr/include/c++/4.8/bits/stl_algobase.h:64, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:2: /usr/include/c++/4.8/type_traits:1243:12: note: template<class> struct std::rank