Compilare: user.cpp: In function ‘void apm(int)’: user.cpp:39:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; rez.size() < nn; i++) ^ user.cpp: In function ‘int main()’: user.cpp:60:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<nod.size()-1; j++) ^