Compilare: user.cpp: In function ‘void bfs()’: user.cpp:43:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i++) { ^ user.cpp:50:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i++) { ^ user.cpp:57:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i++) { ^ user.cpp:63:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[nod].size(); i++) { ^ user.cpp:68:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v[vecin].size(); j++) { ^ user.cpp: In function ‘int main()’: user.cpp:85:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < sol.size(); i++) ^