Solution of 'Variable Sized Arrays' (HackerRank)

 Hi guys, here's my solution of the question-'Variable Sized Arrays' from HackerRank. Again, if you guys have any doubts regarding my code, any suggestions for my code or blog, do comment below. TY and Happy Coding!

#include <bits/stdc++.h>

using namespace std;

int main()

{

    int n,q;

    cin>>n>>q;

    vector<int> v[n];

    for(int i=0;i<n;i++){

        int Q;

        cin>>Q;

        for(int j=0;j<Q;j++){

            int x;

            cin>>x;

            v[i].push_back(x);

        }

    }

    while(q--){

        int i,t;

        cin>>i>>t;

        auto itr=v[i].begin()+t;

        cout<<*itr<<'\n';

    }

}