Eroare de compilare: In file included from /usr/include/c++/4.8/ext/alloc_traits.h:36:0, from /usr/include/c++/4.8/bits/stl_construct.h:61, from /usr/include/c++/4.8/bits/stl_tempbuf.h:60, from /usr/include/c++/4.8/bits/stl_algo.h:62, from /usr/include/c++/4.8/algorithm:62, from user.cpp:2: /usr/include/c++/4.8/bits/alloc_traits.h: In instantiation of ‘struct std::allocator_traits<std::pair<int, int> >’: /usr/include/c++/4.8/ext/alloc_traits.h:121:10: required from ‘struct __gnu_cxx::__alloc_traits<std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_vector.h:75:28: required from ‘struct std::_Vector_base<std::pair<int, int>, std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_vector.h:210:11: required from ‘class std::vector<std::pair<int, int>, std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_queue.h:370:46: required from ‘class std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int>, std::pair<int, int> >, __lambda0>’ user.cpp:15:91: required from here /usr/include/c++/4.8/bits/alloc_traits.h:90:43: error: no type named ‘value_type’ in ‘struct std::pair<int, int>’ typedef typename _Alloc::value_type value_type; ^ /usr/include/c++/4.8/bits/alloc_traits.h:100:1: error: no matching function for call to ‘std::allocator_traits<std::pair<int, int> >::_S_pointer_helper(std::pair<int, int>*)’ _GLIBCXX_ALLOC_TR_NESTED_TYPE(pointer, value_type*) ^ /usr/include/c++/4.8/bits/alloc_traits.h:100:1: note: candidate is: /usr/include/c++/4.8/bits/alloc_traits.h:100:1: note: template<class _Tp> static typename _Tp::pointer std::allocator_traits<_Alloc>::_S_pointer_helper(_Tp*) [with _Tp = _Tp; _Alloc = std::pair<int, int>] _GLIBCXX_ALLOC_TR_NESTED_TYPE(pointer, value_type*) ^ /usr/include/c++/4.8/bits/alloc_traits.h:100:1: note: template argument deduction/substitution failed: /usr/include/c++/4.8/bits/alloc_traits.h: In substitution of ‘template<class _Tp> static typename _Tp::pointer std::allocator_traits<_Alloc>::_S_pointer_helper(_Tp*) [with _Tp = _Tp; _Alloc = std::pair<int, int>] [with _Tp = std::pair<int, int>]’: /usr/include/c++/4.8/bits/alloc_traits.h:100:1: required from ‘struct std::allocator_traits<std::pair<int, int> >’ /usr/include/c++/4.8/ext/alloc_traits.h:121:10: required from ‘struct __gnu_cxx::__alloc_traits<std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_vector.h:75:28: required from ‘struct std::_Vector_base<std::pair<int, int>, std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_vector.h:210:11: required from ‘class std::vector<std::pair<int, int>, std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_queue.h:370:46: required from ‘class std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int>, std::pair<int, int> >, __lambda0>’ user.cpp:15:91: required from here /usr/include/c++/4.8/bits/alloc_traits.h:100:1: error: no type named ‘pointer’ in ‘struct std::pair<int, int>’ /usr/include/c++/4.8/bits/alloc_traits.h: In instantiation of ‘struct std::allocator_traits<std::pair<int, int> >’: /usr/include/c++/4.8/ext/alloc_traits.h:121:10: required from ‘struct __gnu_cxx::__alloc_traits<std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_vector.h:75:28: required from ‘struct std::_Vector_base<std::pair<int, int>, std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_vector.h:210:11: required from ‘class std::vector<std::pair<int, int>, std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_queue.h:370:46: required from ‘class std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int>, std::pair<int, int> >, __lambda0>’ user.cpp:15:91: required from here /usr/include/c++/4.8/bits/alloc_traits.h:109:1: error: no matching function for call to ‘std::allocator_traits<std::pair<int, int> >::_S_const_pointer_helper(std::pair<int, int>*)’ _GLIBCXX_ALLOC_TR_NESTED_TYPE(const_pointer, ^ /usr/include/c++/4.8/bits/alloc_traits.h:109:1: note: candidate is: /usr/include/c++/4.8/bits/alloc_traits.h:109:1: note: template<class _Tp> static typename _Tp::const_pointer std::allocator_traits<_Alloc>::_S_const_pointer_helper(_Tp*) [with _Tp = _Tp; _Alloc = std::pair<int, int>] _GLIBCXX_ALLOC_TR_NESTED_TYPE(const_pointer, ^ /usr/include/c++/4.8/bits/alloc_traits.h:109:1: note: template argument deduction/substitution failed: /usr/include/c++/4.8/bits/alloc_traits.h: In substitution of ‘template<class _Tp> static typename _Tp::const_pointer std::allocator_traits<_Alloc>::_S_const_pointer_helper(_Tp*) [with _Tp = _Tp; _Alloc = std::pair<int, int>] [with _Tp = std::pair<int, int>]’: /usr/include/c++/4.8/bits/alloc_traits.h:109:1: required from ‘struct std::allocator_traits<std::pair<int, int> >’ /usr/include/c++/4.8/ext/alloc_traits.h:121:10: required from ‘struct __gnu_cxx::__alloc_traits<std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_vector.h:75:28: required from ‘struct std::_Vector_base<std::pair<int, int>, std::pair<int, int> >’ /usr/include/c++/4.8/bits/stl_vector.h:210:11: required from ‘class std::vector<std::pair<int, int>, std::pair<int, int> >’