Eroare de compilare: In file included from /usr/local/include/c++/4.8.0/bits/hashtable.h:35:0, from /usr/local/include/c++/4.8.0/unordered_map:47, from user.cpp:6: /usr/local/include/c++/4.8.0/bits/hashtable_policy.h: In instantiation of ‘struct std::__detail::_Hash_code_base<std::vector<int>, std::pair<const std::vector<int>, int>, std::__detail::_Select1st, std::hash<std::vector<int> >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>’: /usr/local/include/c++/4.8.0/bits/hashtable_policy.h:1402:10: required from ‘struct std::__detail::_Hashtable_base<std::vector<int>, std::pair<const std::vector<int>, int>, std::__detail::_Select1st, std::equal_to<std::vector<int> >, std::hash<std::vector<int> >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >’ /usr/local/include/c++/4.8.0/bits/hashtable.h:174:11: required from ‘class std::_Hashtable<std::vector<int>, std::pair<const std::vector<int>, int>, std::allocator<std::pair<const std::vector<int>, int> >, std::__detail::_Select1st, std::equal_to<std::vector<int> >, std::hash<std::vector<int> >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true> >’ /usr/local/include/c++/4.8.0/bits/unordered_map.h:100:18: required from ‘class std::unordered_map<std::vector<int>, int>’ user.cpp:13:50: required from here /usr/local/include/c++/4.8.0/bits/hashtable_policy.h:1070:12: error: invalid use of incomplete type ‘struct std::hash<std::vector<int> >’ struct _Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, ^ In file included from /usr/local/include/c++/4.8.0/bits/basic_string.h:3035:0, from /usr/local/include/c++/4.8.0/string:52, from /usr/local/include/c++/4.8.0/stdexcept:39, from /usr/local/include/c++/4.8.0/array:38, from /usr/local/include/c++/4.8.0/tuple:39, from /usr/local/include/c++/4.8.0/bits/stl_map.h:63, from /usr/local/include/c++/4.8.0/map:61, from user.cpp:2: /usr/local/include/c++/4.8.0/bits/functional_hash.h:58:12: error: declaration of ‘struct std::hash<std::vector<int> >’ struct hash; ^ In file included from /usr/local/include/c++/4.8.0/bits/hashtable.h:35:0, from /usr/local/include/c++/4.8.0/unordered_map:47, from user.cpp:6: /usr/local/include/c++/4.8.0/bits/hashtable_policy.h:1070:12: error: invalid use of incomplete type ‘struct std::hash<std::vector<int> >’ struct _Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, ^ In file included from /usr/local/include/c++/4.8.0/bits/basic_string.h:3035:0, from /usr/local/include/c++/4.8.0/string:52, from /usr/local/include/c++/4.8.0/stdexcept:39, from /usr/local/include/c++/4.8.0/array:38, from /usr/local/include/c++/4.8.0/tuple:39, from /usr/local/include/c++/4.8.0/bits/stl_map.h:63, from /usr/local/include/c++/4.8.0/map:61, from user.cpp:2: /usr/local/include/c++/4.8.0/bits/functional_hash.h:58:12: error: declaration of ‘struct std::hash<std::vector<int> >’ struct hash; ^ In file included from /usr/local/include/c++/4.8.0/bits/hashtable.h:35:0, from /usr/local/include/c++/4.8.0/unordered_map:47, from user.cpp:6: /usr/local/include/c++/4.8.0/bits/hashtable_policy.h:1082:53: error: invalid use of incomplete type ‘struct std::hash<std::vector<int> >’ using __ebo_h1 = _Hashtable_ebo_helper<1, _H1>; ^ In file included from /usr/local/include/c++/4.8.0/bits/basic_string.h:3035:0, from /usr/local/include/c++/4.8.0/string:52, from /usr/local/include/c++/4.8.0/stdexcept:39, from /usr/local/include/c++/4.8.0/array:38, from /usr/local/include/c++/4.8.0/tuple:39,