Compilare: main.cpp: In function 'void Bellman_Ford()': main.cpp:32:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~ main.cpp:19:9: warning: unused variable 'i' [-Wunused-variable] int i, nod; ^ main.cpp: In function 'int Dijkstra()': main.cpp:65:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[nod].size(); ++i) ~~^~~~~~~~~~~~~~~