Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:53:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[Nod].size(); ++i) ^ user.cpp:55:43: warning: unused variable ‘ok’ [-Wunused-variable] int Number = v[Nod][i].y + S, ok = 1; ^ user.cpp: In function ‘int main()’: user.cpp:83:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arbore3.out", "w", stdout); ^