Eroare de compilare: user.cpp: In function ‘void solve()’: user.cpp:22:16: error: no match for ‘operator=’ (operand types are ‘std::unordered_map<int, int>::iterator {aka std::__detail::_Node_iterator<std::pair<const int, int>, false, false>}’ and ‘std::unordered_map<int, short int>::iterator {aka std::__detail::_Node_iterator<std::pair<const int, short int>, false, false>}’) it = H[j].find(r); ^ user.cpp:22:16: note: candidates are: In file included from /usr/local/include/c++/4.8.0/bits/hashtable.h:35:0, from /usr/local/include/c++/4.8.0/unordered_map:47, from user.cpp:3: /usr/local/include/c++/4.8.0/bits/hashtable_policy.h:231:12: note: std::__detail::_Node_iterator<std::pair<const int, int>, false, false>& std::__detail::_Node_iterator<std::pair<const int, int>, false, false>::operator=(const std::__detail::_Node_iterator<std::pair<const int, int>, false, false>&) struct _Node_iterator ^ /usr/local/include/c++/4.8.0/bits/hashtable_policy.h:231:12: note: no known conversion for argument 1 from ‘std::unordered_map<int, short int>::iterator {aka std::__detail::_Node_iterator<std::pair<const int, short int>, false, false>}’ to ‘const std::__detail::_Node_iterator<std::pair<const int, int>, false, false>&’ /usr/local/include/c++/4.8.0/bits/hashtable_policy.h:231:12: note: std::__detail::_Node_iterator<std::pair<const int, int>, false, false>& std::__detail::_Node_iterator<std::pair<const int, int>, false, false>::operator=(std::__detail::_Node_iterator<std::pair<const int, int>, false, false>&&) /usr/local/include/c++/4.8.0/bits/hashtable_policy.h:231:12: note: no known conversion for argument 1 from ‘std::unordered_map<int, short int>::iterator {aka std::__detail::_Node_iterator<std::pair<const int, short int>, false, false>}’ to ‘std::__detail::_Node_iterator<std::pair<const int, int>, false, false>&&’ user.cpp:24:20: error: no match for ‘operator!=’ (operand types are ‘std::unordered_map<int, int>::iterator {aka std::__detail::_Node_iterator<std::pair<const int, int>, false, false>}’ and ‘std::unordered_map<int, short int>::iterator {aka std::__detail::_Node_iterator<std::pair<const int, short int>, false, false>}’) if (it != H[j].end()) { ^ user.cpp:24:20: note: candidates are: In file included from /usr/local/include/c++/4.8.0/iosfwd:40:0, from /usr/local/include/c++/4.8.0/ios:38, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/postypes.h:221:5: note: template<class _StateT> bool std::operator!=(const std::fpos<_StateT>&, const std::fpos<_StateT>&) operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs) ^ /usr/local/include/c++/4.8.0/bits/postypes.h:221:5: note: template argument deduction/substitution failed: user.cpp:24:32: note: ‘std::unordered_map<int, int>::iterator {aka std::__detail::_Node_iterator<std::pair<const int, int>, false, false>}’ is not derived from ‘const std::fpos<_StateT>’ if (it != H[j].end()) { ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:64:0, from /usr/local/include/c++/4.8.0/bits/char_traits.h:39, from /usr/local/include/c++/4.8.0/ios:40, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/stl_pair.h:227:5: 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/local/include/c++/4.8.0/bits/stl_pair.h:227:5: note: template argument deduction/substitution failed: user.cpp:24:32: note: ‘std::unordered_map<int, int>::iterator {aka std::__detail::_Node_iterator<std::pair<const int, int>, false, false>}’ is not derived from ‘const std::pair<_T1, _T2>’ if (it != H[j].end()) { ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:67:0, from /usr/local/include/c++/4.8.0/bits/char_traits.h:39, from /usr/local/include/c++/4.8.0/ios:40, from /usr/local/include/c++/4.8.0/ostream:38, from /usr/local/include/c++/4.8.0/iostream:39, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/stl_iterator.h:303:5: note: template<class _Iterator> bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)