Compilare: user.cpp: In function ‘void dfsa(int)’: user.cpp:66:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < muchiia[x].size();i++) ^ user.cpp: In function ‘void dfsb(int)’: user.cpp:77:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0;i < muchiib[x].size();i++) ^ user.cpp: In function ‘void afisare()’: user.cpp:88:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0;j < ctc[i].size();j++) ^