Compilare: user.cpp: In function ‘void afisare()’: user.cpp:22:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<graf[i].size(); j++) ^ user.cpp: In function ‘bool Bellman(int, int)’: user.cpp:43:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<graf[crt].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:95:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<graf[i].size(); j++) ^ user.cpp:175:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<graf[i].size(); j++) ^