Eroare de compilare: In file included from /usr/include/c++/4.8/string:48:0, from /usr/include/c++/4.8/random:41, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from user.cpp:22: /usr/include/c++/4.8/bits/stl_function.h: In instantiation of ‘bool std::less<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = State]’: /usr/include/c++/4.8/bits/stl_map.h:463:31: required from ‘std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type& std::map<_Key, _Tp, _Compare, _Alloc>::operator[](const key_type&) [with _Key = State; _Tp = std::pair<State, std::basic_string<char> >; _Compare = std::less<State>; _Alloc = std::allocator<std::pair<const State, std::pair<State, std::basic_string<char> > > >; std::map<_Key, _Tp, _Compare, _Alloc>::mapped_type = std::pair<State, std::basic_string<char> >; std::map<_Key, _Tp, _Compare, _Alloc>::key_type = State]’ user.cpp:113:15: required from here /usr/include/c++/4.8/bits/stl_function.h:235:20: error: no match for ‘operator<’ (operand types are ‘const State’ and ‘const State’) { 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/bits/stl_algobase.h:64:0, from /usr/include/c++/4.8/vector:60, from user.cpp:21: /usr/include/c++/4.8/bits/stl_pair.h:220:5: note: template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&) operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) ^ /usr/include/c++/4.8/bits/stl_pair.h:220:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/4.8/string:48:0, from /usr/include/c++/4.8/random:41, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from user.cpp:22: /usr/include/c++/4.8/bits/stl_function.h:235:20: note: ‘const State’ is not derived from ‘const std::pair<_T1, _T2>’ { return __x < __y; } ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/vector:60, from user.cpp:21: /usr/include/c++/4.8/bits/stl_iterator.h:297:5: note: template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&) operator<(const reverse_iterator<_Iterator>& __x, ^ /usr/include/c++/4.8/bits/stl_iterator.h:297:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/4.8/string:48:0, from /usr/include/c++/4.8/random:41, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from user.cpp:22: /usr/include/c++/4.8/bits/stl_function.h:235:20: note: ‘const State’ is not derived from ‘const std::reverse_iterator<_Iterator>’ { return __x < __y; } ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/vector:60, from user.cpp:21: /usr/include/c++/4.8/bits/stl_iterator.h:347:5: note: template<class _IteratorL, class _IteratorR> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&) operator<(const reverse_iterator<_IteratorL>& __x, ^ /usr/include/c++/4.8/bits/stl_iterator.h:347:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/4.8/string:48:0,