Compilare: user.cpp: In function ‘void cautare(int)’: user.cpp:18:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < v[ i ].a.size(); k++) ^ user.cpp:19:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v[ v[ i ].a[ k ] ].a.size() < mi){ ^ user.cpp:23:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < v[ numar ].a.size(); k++) ^ user.cpp:26:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < v[ i ].a.size(); k++) ^ user.cpp: In function ‘void stergere(int, int)’: user.cpp:32:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int first = 0; first < v[ S ].a.size(); first++) ^ user.cpp:35:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int second = 0; second < v[ s ].a.size(); second ++) ^