Compilare: user.cpp: In function 'void get_rec_modules(const std::vector<int, std::allocator<int> >&, const std::vector<int, std::allocator<int> >&, int, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >*)': user.cpp:140: warning: comparison between signed and unsigned integer expressions user.cpp:143: warning: comparison between signed and unsigned integer expressions user.cpp:148: warning: comparison between signed and unsigned integer expressions user.cpp:194: warning: comparison between signed and unsigned integer expressions user.cpp:197: warning: comparison between signed and unsigned integer expressions user.cpp:199: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void get_modules(const std::vector<int, std::allocator<int> >&, int, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >*)': user.cpp:219: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void dfs(int, const std::vector<int, std::allocator<int> >&, std::vector<int, std::allocator<int> >*)': user.cpp:267: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void get_connected_components(const std::vector<int, std::allocator<int> >&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >*)': user.cpp:278: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int num_modules(const std::vector<int, std::allocator<int> >&)': user.cpp:311: warning: comparison between signed and unsigned integer expressions user.cpp:312: warning: comparison between signed and unsigned integer expressions user.cpp:333: warning: comparison between signed and unsigned integer expressions user.cpp:337: warning: comparison between signed and unsigned integer expressions user.cpp:356: warning: comparison between signed and unsigned integer expressions user.cpp:372: warning: comparison between signed and unsigned integer expressions user.cpp:376: warning: comparison between signed and unsigned integer expressions user.cpp:379: warning: comparison between signed and unsigned integer expressions user.cpp:382: warning: comparison between signed and unsigned integer expressions user.cpp:411: warning: comparison between signed and unsigned integer expressions