Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:50:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();j++) ^ user.cpp:53:42: error: no match for ‘operator[]’ (operand types are ‘int [100005]’ and ‘__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, int> > >::value_type {aka std::pair<int, int>}’) if(ans[v[i][j].second]<0) ans[v[i][j]].second+=mod; ^