#include <bits/stdc++.h>
using namespace std;
using ll = long long;

template <class T> struct fenwick_tree {
    using U = T;

  public:
    fenwick_tree() : _n(0) {}
    fenwick_tree(int n) : _n(n), data(n) {}

    void add(int p, T x) {
        assert(0 <= p && p < _n);
        p++;
        while (p <= _n) {
            data[p - 1] += U(x);
            p += p & -p;
        }
    }

    T sum(int l, int r) {
        assert(0 <= l && l <= r && r <= _n);
        return sum(r) - sum(l);
    }

  private:
    int _n;
    std::vector<U> data;

    U sum(int r) {
        U s = 0;
        while (r > 0) {
            s += data[r - 1];
            r -= r & -r;
        }
        return s;
    }
};

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    fenwick_tree<ll> fw(n), fw2(n), fw3(n);
    vector<pair<int,int>> a2(n);
    vector<ll> ca;
    for(int i = 0; i < n; i++){
        cin >> a2[i].first >> a2[i].second;
        fw.add(i, a2[i].first);
        ca.push_back(a2[i].first + a2[i].second);
        ca.push_back(a2[i].second);
    }
    int Q;
    cin >> Q;
    vector<tuple<int,int,int>> query(Q);
    for(int i = 0; i < Q; i++){
        cin >> get<0>(query[i]) >> get<1>(query[i]) >> get<2>(query[i]);
        ca.push_back(get<0>(query[i]));
    }
    sort(ca.begin(), ca.end());
    ca.erase(unique(ca.begin(), ca.end()), ca.end());
    vector<vector<pair<int,int>>> tb(ca.size());
    vector<vector<tuple<int,int,int>>> tb2(ca.size());
    for(int i = 0; i < n; i++){
        int p = lower_bound(ca.begin(), ca.end(), a2[i].second) - ca.begin();
        tb[p].emplace_back(a2[i].first, i);
        p = lower_bound(ca.begin(), ca.end(), a2[i].first + a2[i].second) - ca.begin();
        tb[p].emplace_back(-1, i);
    }
    for(int i = 0; i < Q; i++){
        int p = lower_bound(ca.begin(), ca.end(), get<0>(query[i])) - ca.begin();
        tb2[p].emplace_back(get<1>(query[i]) - 1, get<2>(query[i]), i);
    }
    vector<ll> ans(Q);
    int v, idx, l, r;
    for(int i = 0; i < ca.size(); i++){
        for(auto &&p:tb[i]){
            tie(v, idx) = p;
            if(v >= 0){
                fw.add(idx, -v);
                fw2.add(idx, v + ca[i]);
                fw3.add(idx, 1);
            }else{
                fw2.add(idx, -ca[i]);
                fw3.add(idx, -1);
            }
        }
        for(auto &&p:tb2[i]){
            tie(l, r, idx) = p;
            ans[idx] = fw.sum(l, r) + fw2.sum(l, r) - fw3.sum(l, r) * (ca[i] + 1);
        }
    }
    for(auto &&v:ans){
        cout << v << '\n';
    }
}