Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:24:10: error: cannot bind ‘std::basic_istream<char>’ lvalue to ‘std::basic_istream<char>&&’ fin>>n; ^ In file included from /usr/include/c++/4.8/fstream:38:0, from user.cpp:1: /usr/include/c++/4.8/istream:872:5: error: initializing argument 1 of ‘std::basic_istream<_CharT, _Traits>& std::operator>>(std::basic_istream<_CharT, _Traits>&&, _Tp&) [with _CharT = char; _Traits = std::char_traits<char>; _Tp = std::vector<int>]’ operator>>(basic_istream<_CharT, _Traits>&& __is, _Tp& __x) ^ user.cpp: In function ‘void bt()’: user.cpp:32:12: error: no match for ‘operator=’ (operand types are ‘std::vector<int>’ and ‘int’) level = 1; ^ user.cpp:32:12: note: candidates are: In file included from /usr/include/c++/4.8/vector:69:0, from user.cpp:2: /usr/include/c++/4.8/bits/vector.tcc:160:5: note: std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(const std::vector<_Tp, _Alloc>&) [with _Tp = int; _Alloc = std::allocator<int>] vector<_Tp, _Alloc>:: ^ /usr/include/c++/4.8/bits/vector.tcc:160:5: note: no known conversion for argument 1 from ‘int’ to ‘const std::vector<int>&’ In file included from /usr/include/c++/4.8/vector:64:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_vector.h:439:7: note: std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(std::vector<_Tp, _Alloc>&&) [with _Tp = int; _Alloc = std::allocator<int>] operator=(vector&& __x) noexcept(_Alloc_traits::_S_nothrow_move()) ^ /usr/include/c++/4.8/bits/stl_vector.h:439:7: note: no known conversion for argument 1 from ‘int’ to ‘std::vector<int>&&’ /usr/include/c++/4.8/bits/stl_vector.h:461:7: note: std::vector<_Tp, _Alloc>& std::vector<_Tp, _Alloc>::operator=(std::initializer_list<_Tp>) [with _Tp = int; _Alloc = std::allocator<int>] operator=(initializer_list<value_type> __l) ^ /usr/include/c++/4.8/bits/stl_vector.h:461:7: note: no known conversion for argument 1 from ‘int’ to ‘std::initializer_list<int>’ user.cpp:35:18: error: no match for ‘operator>’ (operand types are ‘std::vector<int>’ and ‘int’) while(level > 0) { ^ user.cpp:35:18: note: candidates are: In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/stl_pair.h:233:5: 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:233:5: note: template argument deduction/substitution failed: user.cpp:35:20: note: ‘std::vector<int>’ is not derived from ‘const std::pair<_T1, _T2>’ while(level > 0) { ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40,