#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcount
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
const int N = 5e5 + 7;
int n, q, a[N];
signed main() {
#ifdef HOME
freopen("input.txt", "r", stdin);
#else
ios_base::sync_with_stdio(0); cin.tie(0);
#endif
cin >> n;
for (int i = 0; i < n; ++i)
cin >> a[i];
vector <ii> p;
vector <int> s;
for (int i = 0; i < n; ++i) {
while (s.size() && a[s.back()] <= a[i]) {
p.app(mp(s.back(), i));
s.pop_back();
}
s.app(i);
}
s.clear();
for (int i = n - 1; i >= 0; --i) {
while (s.size() && a[s.back()] <= a[i]) {
p.app(mp(i, s.back()));
s.pop_back();
}
s.app(i);
}
int q;
cin >> q;
while (q--) {
int l, r;
cin >> l >> r;
--l; --r;
int ans = 0;
for (auto e : p) {
if (l <= e.f && e.s <= r) {
for (int i = e.s + (e.s - e.f); i <= r; ++i)
ans = max(ans, a[i] + a[e.f] + a[e.s]);
}
}
cout << ans << '\n';
}
}
