Compilare: user.cpp: In function ‘void df_deconex(int)’: user.cpp:18:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[v].size(); i ++) { ^ user.cpp: In function ‘void df(int)’: user.cpp:55:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < L[v].size(); i ++) { ^ user.cpp: In function ‘int main()’: user.cpp:83:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ans.size() - 1; i ++) g << ans[i] << " "; ^