#include <bits/stdc++.h>

using namespace std;


int main() {

    int n;
    cin>>n;
    vector<int> a(n);
    for (int i = 0; i<n; i++) cin>>a[i];

    vector<int> pref(n+1);
    for (int i = 1; i<=n; i++) pref[i] = pref[i-1] + a[i-1];
    int q;
    cin>>q;
    int l, r;
    for (int i = 0; i<q; i++)
    {
        cin>>l>>r; cout<<(pref[r]-pref[l-1])/10<<endl;
    }
}