Compilare: user.cpp: In function ‘void dfs1(int, int)’: user.cpp:11:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<graf[nod].size(); i++) ^ user.cpp: In function ‘void dfs2(int, int)’: user.cpp:19:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<graf[nod].size(); i++) ^