#include <bits/stdc++.h>
using namespace std;
using ll=long long;
int main(){
	int n;
	cin>>n;
	vector<ll> a(n);
	for(int i=0;i<n;i++)cin>>a[i];
	vector<ll> lsum(n),rsum(n);
	for(int i=1;i<n;i++){
		if(a[i-1]!=0)lsum[i]=lsum[i-1]+a[i-1];
	}
	for(int i=n-2;i>=0;i--){
		if(a[i+1]!=0)rsum[i]=rsum[i+1]+a[i+1];
	}
	int q;
	cin>>q;
	while(q--){
		int x;
		ll b;
		cin>>x>>b;
		x--;
		cout<<lsum[x]+rsum[x]+b<<endl;
	}
	return 0;
	
}