Compilare: user.cpp:11: warning: ‘typedef’ was ignored in this declaration user.cpp: In function ‘void readGraph()’: user.cpp:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void printGraph()’: user.cpp:50: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘bool contains(int, std::vector<int, std::allocator<int> >)’: user.cpp:58: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int bfs(int, int)’: user.cpp:76: warning: comparison between signed and unsigned integer expressions