Compilare: user.cpp: In function ‘void DF(int)’: user.cpp:14:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<g[nod].size(); i++) ^ user.cpp:22:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<g[nod].size(); j++) ^ user.cpp: In function ‘int main()’: user.cpp:37:27: warning: unused variable ‘nr’ [-Wunused-variable] int i, m, n, p, x, y, nr; ^