//Слава Україні, Героям слава

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    freopen("in.txt", "r", stdin);
    freopen("out.txt", "w", stdout);
    int n;
    cin >> n;
    set<pair<ll, ll>> s;
    for(int i = 0; i < n; i += 2) {
        ll a, b;
        cin >> a >> b;
        s.insert({a, a + b - 1});
    }
    int q;
    cin >> q;
    vector<set<pair<pair<ll, ll>, pair<ll, ll>>>> v(q);
    for(int i = 0; i < q; i++) {
        int m;
        cin >> m;
        for(int j = 0; j < m; j++) {
            ll a, b, c;
            cin >> b >> a >> c;
            v[i].insert({{a, a + c - 1}, {b, b + c - 1}});
        }
    }
    for(int i = 0; i < q; i++) {
        set<pair<ll, ll>> tmp;
        while(!s.empty()) {
            auto x = *s.begin();
            s.erase(s.begin());
            auto itr = v[i].lower_bound({{x.first + 1, 0}, {0, 0}});
            if(itr == v[i].begin()) {
                tmp.insert(x);
                continue;
            }
            itr--;
            if(x.second < itr->first.first or x.first > itr->first.second) {
                tmp.insert(x);
                continue;
            }
            if(x.second <= itr->first.second) {
                ll diff = itr->second.first - itr->first.first;
                x.first += diff;
                x.second += diff;
                tmp.insert(x);
                continue;
            }
            ll diff = itr->second.first - itr->first.first;
            tmp.insert({x.first + diff, itr->first.second + diff});
            s.insert({itr->first.second + 1, x.second});
        }
        s = tmp;
    }
    cout << s.begin()->first << "\n";
    return 0;
}