Compilare: main.cpp: In function 'int BF(int)': main.cpp:30:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<G[nod].size();j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int Flow(int)': main.cpp:51:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[D].size();i++) ~^~~~~~~~~~~~ main.cpp:79:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^