Compilare: user.cpp: In function ‘void bfs()’: user.cpp:28:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[Nod].size(); ++ i) ^ user.cpp: In function ‘int fluxmax()’: user.cpp:44:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < v[B].size(); ++ j){ ^ user.cpp: In function ‘int main()’: user.cpp:76:27: warning: unused variable ‘c’ [-Wunused-variable] int a = 0, b = 0, c = 0; ^