Compilare: user.cpp: In function ‘void comp_conexe(int, int)’: user.cpp:104:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘void apm(int, int)’: user.cpp:160:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[S].size();i++) ^ user.cpp:170:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<G[vf].size();j++) ^ user.cpp:176:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<G[vf].size();j++) ^