Eroare de compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:28:13: error: request for member ‘size’ in ‘ctc’, which is of non-class type ‘std::vector<int> [100005]’ ctc[ctc.size() - 1].push_back(nod); ^ user.cpp: In function ‘int main()’: user.cpp:47:17: error: request for member ‘push_back’ in ‘ctc’, which is of non-class type ‘std::vector<int> [100005]’ ctc.push_back(a); ^ user.cpp:50:17: error: request for member ‘size’ in ‘ctc’, which is of non-class type ‘std::vector<int> [100005]’ cout << ctc.size() << "\n"; ^ user.cpp:51:28: error: request for member ‘size’ in ‘ctc’, which is of non-class type ‘std::vector<int> [100005]’ for(int i = 1;i <= ctc.size();i++) { ^ user.cpp:32:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ctc.in", "r", stdin); ^ user.cpp:33:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ctc.out", "w", stdout); ^