Eroare de compilare: user.cpp: In constructor ‘Tree::Tree(int)’: user.cpp:120:38: warning: ‘Tree::m_last’ will be initialized after [-Wreorder] std::vector<int> m_depth, m_first, m_last; ^ user.cpp:119:44: warning: ‘std::vector<std::vector<int> > Tree::m_ancestors’ [-Wreorder] std::vector< std::vector<int> > m_edges, m_ancestors; ^ user.cpp:48:3: warning: when initialized here [-Wreorder] Tree(int size = 0) : ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:4: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Solver::Event*, std::vector<Solver::Event> >; _Tp = Solver::Event]’: /usr/include/c++/4.8/bits/stl_algo.h:2307:70: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Solver::Event*, std::vector<Solver::Event> >]’ /usr/include/c++/4.8/bits/stl_algo.h:2338:54: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Solver::Event*, std::vector<Solver::Event> >; _Size = int]’ /usr/include/c++/4.8/bits/stl_algo.h:5475:36: required from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = __gnu_cxx::__normal_iterator<Solver::Event*, std::vector<Solver::Event> >]’ user.cpp:197:41: required from here /usr/include/c++/4.8/bits/stl_algo.h:2269:19: error: passing ‘const Solver::Event’ as ‘this’ argument of ‘bool Solver::Event::operator<(const Solver::Event&)’ discards qualifiers [-fpermissive] while (__pivot < *__last) ^