Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:23:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:64:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (;it[now]<v[now].size();++it[now]) ^ user.cpp:80:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<rasp.size();++i) ^