Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:26:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();i++) ^ user.cpp:32:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();i++) ^ user.cpp:42:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i+dist<w.size();i++) { ^ user.cpp:57:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i+dist<w.size();i++) { ^