Compilare: user.cpp: In function ‘void strongconnect(int)’: user.cpp:25:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[v].size(); i++) ^ user.cpp:42:13: warning: unused variable ‘conex’ [-Wunused-variable] int conex[MAX_N]= {0}, x = 0, w; ^ user.cpp:42:32: warning: unused variable ‘x’ [-Wunused-variable] int conex[MAX_N]= {0}, x = 0, w; ^ user.cpp: In function ‘int main()’: user.cpp:73:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < C[i].size(); j++) ^