Compilare: user.cpp: In function ‘void baga(long long int)’: user.cpp:19:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int it=0;it<H[r].size();++it) ^ user.cpp: In function ‘int aflu(long long int)’: user.cpp:32:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int it=0;it<H[r].size();++it) ^ user.cpp: In function ‘int main()’: user.cpp:68:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[1].size();++i) g<<v[1][i]; ^