Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:95:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < vec.size();++i) ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:3: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Event*, std::vector<Event> >; _Tp = Event; _Compare = main()::__lambda0]’: /usr/include/c++/4.8/bits/stl_algo.h:2319:78: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Event*, std::vector<Event> >; _Compare = main()::__lambda0]’ /usr/include/c++/4.8/bits/stl_algo.h:2360:62: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Event*, std::vector<Event> >; _Size = int; _Compare = main()::__lambda0]’ /usr/include/c++/4.8/bits/stl_algo.h:5513:44: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<Event*, std::vector<Event> >; _Compare = main()::__lambda0]’ user.cpp:92:4: required from here /usr/include/c++/4.8/bits/stl_algo.h:2287:35: error: no match for call to ‘(main()::__lambda0) (Event&, const Event&)’ while (__comp(*__first, __pivot)) ^ user.cpp:79:5: note: candidates are: [](Event &ev1, Event &ev2) ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:3: /usr/include/c++/4.8/bits/stl_algo.h:2287:35: note: int (*)(Event&, Event&) <conversion> while (__comp(*__first, __pivot)) ^ /usr/include/c++/4.8/bits/stl_algo.h:2287:35: note: candidate expects 3 arguments, 3 provided user.cpp:79:29: note: main()::__lambda0 [](Event &ev1, Event &ev2) ^ user.cpp:79:29: note: no known conversion for argument 2 from ‘const Event’ to ‘Event&’ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:3: /usr/include/c++/4.8/bits/stl_algo.h:2290:34: error: no match for call to ‘(main()::__lambda0) (const Event&, Event&)’ while (__comp(__pivot, *__last)) ^ user.cpp:79:5: note: candidates are: [](Event &ev1, Event &ev2) ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:3: /usr/include/c++/4.8/bits/stl_algo.h:2290:34: note: int (*)(Event&, Event&) <conversion> while (__comp(__pivot, *__last)) ^ /usr/include/c++/4.8/bits/stl_algo.h:2290:34: note: candidate expects 3 arguments, 3 provided user.cpp:79:29: note: main()::__lambda0 [](Event &ev1, Event &ev2) ^ user.cpp:79:29: note: no known conversion for argument 1 from ‘const Event’ to ‘Event&’