#include <bits/stdc++.h>

using namespace std;

template <typename X>
struct SegTree{
    using FX = function<X(X, X)>; // X•X -> X となる関数の型
    int n;
    FX fx;
    const X ex;
    vector<X> dat;

    SegTree(int n_, FX fx_, X ex_) : n(), fx(fx_), ex(ex_){
        int x = 1;
        while(n_ > x){
            x *= 2;
        }
        n = x;
        dat.assign(n * 2, ex);
    }

    X get(int i){
        return dat[i + n];
    }
    
    void set(int i, X x){ dat[i + n] = x; }

    void build(){
        for(int k = n - 1; k >= 1; k--) dat[k] = fx(dat[k * 2], dat[k * 2 + 1]);
    }

    void update(int i, X x){
        i += n;
        dat[i] = x;
        while(i > 0){
            i >>= 1;  // parent
            dat[i] = fx(dat[i * 2], dat[i * 2 + 1]);
        }
    }

    X query(int a, int b){
        X vl = ex;
        X vr = ex;
        int l = a + n;
        int r = b + n;
        while(l < r){
            if(l & 1) vl = fx(vl, dat[l++]);
            if(r & 1) vr = fx(dat[--r], vr);
            l >>= 1;
            r >>= 1;
        }
        return fx(vl, vr);
    }
};

const long long INF = 1LL << 40;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, q; cin >> n;
    vector<long long> a(n), b(n);
    for(int i = 0; i < n; i++){
        cin >> a[i] >> b[i];
    }
    vector<long long> sum(n + 1), sum2(n + 1);
    for(int i = 0; i < n; i++){
        sum[i + 1] = sum[i] + b[i];
    }
    sum2 = sum;

    cin >> q;
    vector<tuple<int, long long, long long>> query(q);
    vector<int> check;
    for(int i = 0; i < q; i++){
        int t;
        long long x, y; cin >> t >> x >> y;
        query[i] = {t, x, y};
        if(t == 1){
            sum2.push_back(x - 1);
            sum2.push_back(x);
        }
    }
    sort(sum2.begin(), sum2.end());
    sum2.erase(unique(sum2.begin(), sum2.end()), sum2.end());

    using T = tuple<long long, long long, long long, long long>;
    auto fx = [](T x, T y) -> T {
        auto [all1, left1, right1, res1] = x;
        auto [all2, left2, right2, res2] = y;
        return {all1 + all2, max(left1, all1 + left2), max(right2, all2 + right1), max({res1, res2, right1 + left2})};
    };

    int m = sum2.size() - 1;
    SegTree<T> seg(m, fx, T(0, -INF, -INF, -INF));
    for(int i = 1; i <= m; i++){
        auto iter = lower_bound(sum.begin(), sum.end(), sum2[i]);
        int k = (iter - sum.begin()) - 1;
        int siz = sum2[i] - sum2[i - 1];
        if(a[k] < 0){
            seg.update(i - 1, T(a[k] * siz, a[k], a[k], a[k]));
        }else{
            seg.update(i - 1, T(a[k] * siz, a[k] * siz, a[k] * siz, a[k] * siz));
        }
    }

    for(int i = 0; i < q; i++){
        auto [t, x, y] = query[i];
        if(t == 1){
            x--;
            int k = upper_bound(sum2.begin(), sum2.end(), x) - sum2.begin(); k--;
            seg.update(k, T(y, y, y, y));
        }else{
            x--;
            int k1 = upper_bound(sum2.begin(), sum2.end(), x) - sum2.begin(); k1--;
            int k2 = upper_bound(sum2.begin(), sum2.end(), y - 1) - sum2.begin(); k2--;
            if(k1 == k2){
                long long v = get<0>(seg.get(k1)) / (sum2[k1 + 1] - sum2[k1]);
                if(v < 0){
                    cout << v << endl;
                }else{
                    cout << v * (y - x) << endl;
                }
            }else{
                int l = k1 + 1, r = k2;
                T left, right;

                long long v1 = get<0>(seg.get(k1)) / (sum2[k1 + 1] - sum2[k1]);
                long long s1 = v1 * (sum2[k1 + 1] - x);
                if(v1 < 0){
                    left = T(s1, v1, v1, v1);
                }else{
                    left = T(s1, s1, s1, s1);
                }

                long long v2 = get<0>(seg.get(k2)) / (sum2[k2 + 1] - sum2[k2]);
                long long s2 = v2 * (y - sum2[k2]);
                if(v2 < 0){
                    right = T(s2, v2, v2, v2);
                }else{
                    right = T(s2, s2, s2, s2);
                }
                T ans = left;
                ans = fx(ans, seg.query(l, r));
                ans = fx(ans, right);
                cout << get<3>(ans) << endl;
            }
        }
    }
}