Eroare de compilare: In file included from /usr/include/c++/4.8/string:48:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/sstream:38, from /usr/include/c++/4.8/complex:45, from /usr/include/c++/4.8/ccomplex:38, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52, from user.cpp:1: /usr/include/c++/4.8/bits/stl_function.h: In instantiation of ‘bool std::less<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = my]’: /usr/include/c++/4.8/bits/stl_tree.h:1352:51: required from ‘std::pair<std::_Rb_tree_node_base*, std::_Rb_tree_node_base*> std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_get_insert_equal_pos(const key_type&) [with _Key = my; _Val = my; _KeyOfValue = std::_Identity<my>; _Compare = std::less<my>; _Alloc = std::allocator<my>; std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::key_type = my]’ /usr/include/c++/4.8/bits/stl_tree.h:1398:46: required from ‘std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_insert_equal(_Arg&&) [with _Arg = const my&; _Key = my; _Val = my; _KeyOfValue = std::_Identity<my>; _Compare = std::less<my>; _Alloc = std::allocator<my>; std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator = std::_Rb_tree_iterator<my>]’ /usr/include/c++/4.8/bits/stl_multiset.h:455:40: required from ‘std::multiset<_Key, _Compare, _Alloc>::iterator std::multiset<_Key, _Compare, _Alloc>::insert(const value_type&) [with _Key = my; _Compare = std::less<my>; _Alloc = std::allocator<my>; std::multiset<_Key, _Compare, _Alloc>::iterator = std::_Rb_tree_const_iterator<my>; std::multiset<_Key, _Compare, _Alloc>::value_type = my]’ user.cpp:21:30: required from here /usr/include/c++/4.8/bits/stl_function.h:235:20: error: no match for ‘operator<’ (operand types are ‘const my’ and ‘const my’) { return __x < __y; } ^ /usr/include/c++/4.8/bits/stl_function.h:235:20: note: candidates are: In file included from /usr/include/c++/4.8/regex:62:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:108, from user.cpp:1: /usr/include/c++/4.8/bits/regex.h:1334:5: note: template<class _Bi_iter> bool std::operator<(const std::sub_match<_BiIter>&, const typename std::iterator_traits<_Iter>::value_type&) operator<(const sub_match<_Bi_iter>& __lhs, ^ /usr/include/c++/4.8/bits/regex.h:1334:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/4.8/string:48:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/sstream:38, from /usr/include/c++/4.8/complex:45, from /usr/include/c++/4.8/ccomplex:38, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52, from user.cpp:1: /usr/include/c++/4.8/bits/stl_function.h:235:20: note: ‘const my’ is not derived from ‘const std::sub_match<_BiIter>’ { return __x < __y; } ^ In file included from /usr/include/c++/4.8/regex:62:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:108, from user.cpp:1: /usr/include/c++/4.8/bits/regex.h:1254:5: note: template<class _Bi_iter> bool std::operator<(const typename std::iterator_traits<_Iter>::value_type&, const std::sub_match<_BiIter>&) operator<(typename iterator_traits<_Bi_iter>::value_type const& __lhs, ^ /usr/include/c++/4.8/bits/regex.h:1254:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/4.8/string:48:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42,