#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
ll n;
cin>>n;
ll a[n+5];
for(ll i=1;i<=n;i++){
cin>>a[i];
}
ll q;
cin>>q;
while(q--){
ll l,r;
cin>>l>>r;
ll ans=0;
for(ll x=l;x<=r;x++){
for(ll y=x+1;y<=r;y++){
for(ll z=x+1;z<=r;z++){
if(y-x<=z-y){
ans=max(ans,a[x]+a[y]+a[z]);
}
}
}
}
cout<<ans<<"\n";
}
}
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