#include <queue>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
int main() {
	cin.tie(0);
	ios_base::sync_with_stdio(false);
	int N, Q;
	cin >> N;
	vector<int> A(N);
	for (int i = 0; i < N; ++i) cin >> A[i];
	vector<int> sum(N - 23);
	for (int i = 0; i < N - 23; ++i) {
		for (int j = 0; j < 24; ++j) {
			sum[i] += A[i + j];
		}
	}
	priority_queue<pair<int, int> > que;
	for (int i = 0; i < N - 23; ++i) {
		que.push(make_pair(sum[i], i));
	}
	cin >> Q;
	for (int i = 0; i < Q; ++i) {
		int T, V;
		cin >> T >> V; --T;
		for (int j = T - 23; j <= T; ++j) {
			if (0 <= j && j < N - 23) {
				sum[j] += V - A[T];
				que.push(make_pair(sum[j], j));
			}
		}
		A[T] = V;
		while (true) {
			pair<int, int> u = que.top();
			if (sum[u.second] == u.first) break;
			que.pop();
		}
		cout << que.top().first << '\n';
	}
	return 0;
}