Compilare: user.cpp: In function ‘void dp(int)’: user.cpp:18:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<G[nod].size();i++) ^ user.cpp:15:25: warning: variable ‘frunza’ set but not used [-Wunused-but-set-variable] int max1=0,max2=0,i,frunza=1; ^ user.cpp: In function ‘int main()’: user.cpp:38:11: warning: unused variable ‘i’ [-Wunused-variable] int M,i,x,y; ^