Compilare: main.cpp: In function 'void parcurgere(long long int)': main.cpp:14:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<v[nod].size();++i) ~^~~~~~~~~~~~~~ main.cpp:12:9: warning: unused variable 'cost' [-Wunused-variable] int cost; ^~~~ main.cpp: At global scope: main.cpp:33:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main () ^