Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:25:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:119:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<muchii.size();i++) ^ user.cpp:139:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<emuchii.size();i++) ^ user.cpp:166:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<muchii.size();i++) ^