#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;
using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin >> n;

    vector<int> a(n), s(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    int t = 0, m = 0;
    for (int i = 0; i < n; i++) {
        if (i < 24) {
            t += a[i];
        } else {
            t += a[i] - a[i - 24];
        }
        s[i] = t;
        m = max(m, t);
    }

    int q;
    cin >> q;

    for (int h = 0; h < q; h++) {
        int t, v;
        cin >> t >> v;
        t--;

        int d = v - a[t];
        a[t] = v;

        for (int i = t; i < min(t + 24, n); i++) {
            s[i] += d;
            m = max(m, s[i]);
        }

        cout << m << '\n';
    }

    return 0;
}