Compilare: user.cpp:10: warning: ‘typedef’ was ignored in this declaration user.cpp: In function ‘void readGraph()’: user.cpp:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void printGraph()’: user.cpp:49: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘bool contains(int, std::vector<int, std::allocator<int> >)’: user.cpp:57: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int bfs(int, int)’: user.cpp:75: warning: comparison between signed and unsigned integer expressions