Compilare: main.cpp: In function 'int parcurgere(int)': main.cpp:30:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();++i) ~^~~~~~~~~~~~~~ main.cpp: In function 'void update(int, int)': main.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();++i) ~^~~~~~~~~~~~~~ main.cpp: At global scope: main.cpp:73:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^