Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:17:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<g[v].size();i++) ^ user.cpp: In function ‘void dfs_(int)’: user.cpp:25:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<gt[v].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:47:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<Cp[i].size();j++)cout<<Cp[i][j]<<' '; ^