Compilare: user.cpp: In function ‘int bfs()’: user.cpp:24:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[m].size();i++) ^ user.cpp:94:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol.size();i++) ^