Compilare: main.cpp: In function 'void dijkstra()': main.cpp:57:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<a[poz].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void DFS(int)': main.cpp:86:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<a[nod].size(); i++) ~^~~~~~~~~~~~~~