View Compilation Error

0_0_26018750_24553.cpp: In function 'int main()':
0_0_26018750_24553.cpp:119:104: error: 'std::map<long long int, long long int>::iterator' has no member named 'first'
                     (q[i].ans*=jc[it->second*it->first]*it->second%mod*ny[it->first]%mod)%=mod,sum-=it.first*it->second;
                                                                                                        ^