Eroare de compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:28:8: error: no match for ‘operator[]’ (operand types are ‘std::vector<int> [100005]’ and ‘std::vector<int>’) ctc[ctc[0]].push_back(nod); ^ user.cpp: In function ‘int main()’: user.cpp:42:12: error: no match for ‘operator=’ (operand types are ‘std::vector<int>’ and ‘int’) ctc[0] = 1; ^ user.cpp:42:12: note: candidates are: In file included from /usr/include/c++/4.8/vector:69:0, from /usr/include/c++/4.8/bits/random.h:34, from /usr/include/c++/4.8/random:50, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64, from user.cpp:1: /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 /usr/include/c++/4.8/bits/random.h:34, from /usr/include/c++/4.8/random:50, from /usr/include/c++/4.8/bits/stl_algo.h:65, from /usr/include/c++/4.8/algorithm:62, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:64, from user.cpp:1: /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:46:19: error: no ‘operator++(int)’ declared for postfix ‘++’ [-fpermissive] ctc[0]++; ^ user.cpp:49:11: error: no ‘operator--(int)’ declared for postfix ‘--’ [-fpermissive] ctc[0]--; ^ user.cpp:50:18: error: cannot bind ‘std::ostream {aka std::basic_ostream<char>}’ lvalue to ‘std::basic_ostream<char>&&’ cout << ctc[0] << "\n"; ^ In file included from /usr/include/c++/4.8/istream:39:0, from /usr/include/c++/4.8/sstream:38, from /usr/include/c++/4.8/complex:45, from /usr/include/c++/4.8/ccomplex:38, from /usr/include/i386-linux-gnu/c++/4.8/bits/stdc++.h:52, from user.cpp:1: