Borderou de evaluare (job #518398)

Eroare de compilare: user.cpp: In function 'void back(poz, int, int)': user.cpp:52:6: warning: unused variable 'i' [-Wunused-variable] In file included from /usr/include/c++/4.6/string:50:0, from /usr/include/c++/4.6/bits/locale_classes.h:42, from /usr/include/c++/4.6/bits/ios_base.h:43, from /usr/include/c++/4.6/ios:43, from /usr/include/c++/4.6/istream:40, from /usr/include/c++/4.6/fstream:40, from user.cpp:1: /usr/include/c++/4.6/bits/stl_function.h: In member function 'bool std::less<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = poz]': /usr/include/c++/4.6/bits/stl_heap.h:305:4: instantiated from 'void std::__adjust_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<poz*, std::vector<poz, std::allocator<poz> > >, _Distance = int, _Tp = poz, _Compare = std::less<poz>]' /usr/include/c++/4.6/bits/stl_heap.h:436:4: instantiated from 'void std::make_heap(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<poz*, std::vector<poz, std::allocator<poz> > >, _Compare = std::less<poz>]' /usr/include/c++/4.6/bits/stl_queue.h:403:9: instantiated from 'std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = poz, _Sequence = std::vector<poz, std::allocator<poz> >, _Compare = std::less<poz>]' user.cpp:51:22: instantiated from here /usr/include/c++/4.6/bits/stl_function.h:236:22: error: no match for 'operator<' in '__x < __y' /usr/include/c++/4.6/bits/stl_function.h:236:22: note: candidates are: /usr/include/c++/4.6/bits/stl_pair.h:207:5: note: template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&) /usr/include/c++/4.6/bits/stl_iterator.h:291:5: note: template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&) /usr/include/c++/4.6/bits/stl_iterator.h:341:5: note: template<class _IteratorL, class _IteratorR> bool std::operator<(const std::reverse_iterator<_IteratorL>&, const std::reverse_iterator<_IteratorR>&) /usr/include/c++/4.6/bits/stl_iterator.h:1049:5: note: template<class _IteratorL, class _IteratorR> bool std::operator<(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&) /usr/include/c++/4.6/bits/stl_iterator.h:1055:5: note: template<class _Iterator> bool std::operator<(const std::move_iterator<_Iterator>&, const std::move_iterator<_Iterator>&) /usr/include/c++/4.6/bits/basic_string.h:2510:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&) /usr/include/c++/4.6/bits/basic_string.h:2522:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*) /usr/include/c++/4.6/bits/basic_string.h:2534:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator<(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&) /usr/include/c++/4.6/bits/stl_vector.h:1290:5: note: template<class _Tp, class _Alloc> bool std::operator<(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&) /usr/include/c++/4.6/tuple:586:5: note: template<class ... _TElements, class ... _UElements> bool std::operator<(const std::tuple<_TElements ...>&, const std::tuple<_Elements ...>&) /usr/include/c++/4.6/bits/stl_deque.h:272:5: note: template<class _Tp, class _Ref, class _Ptr> bool std::operator<(const std::_Deque_iterator<_Tp, _Ref, _Ptr>&, const std::_Deque_iterator<_Tp, _Ref, _Ptr>&) /usr/include/c++/4.6/bits/stl_deque.h:280:5: note: template<class _Tp, class _RefL, class _PtrL, class _RefR, class _PtrR> bool std::operator<(const std::_Deque_iterator<_Tp, _RefL, _PtrL>&, const std::_Deque_iterator<_Tp, _RefR, _PtrR>&) /usr/include/c++/4.6/bits/stl_deque.h:1935:5: note: template<class _Tp, class _Alloc> bool std::operator<(const std::deque<_Tp, _Alloc>&, const std::deque<_Tp, _Alloc>&) /usr/include/c++/4.6/bits/stl_queue.h:284:5: note: template<class _Tp, class _Seq> bool std::operator<(const std::queue<_Tp, _Seq>&, const std::queue<_Tp, _Seq>&)