Compilare: user.cpp: In function ‘void BellmanFord()’: user.cpp:48:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<Muchie[j].size();k++) { ^ user.cpp: In function ‘bool Dijkstra()’: user.cpp:93:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<Muchie[i].size();j++) ^ user.cpp:117:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<Muchie[nod].size();i++) { ^ user.cpp: In function ‘void afisare()’: user.cpp:157:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^