#include <bits/stdc++.h>
using namespace std;

int main() {
	int n;
	cin>>n;
	
	vector<int> numbers(n);
	
	for(auto& number: numbers){
		cin>>number;
	}
	
	int q;
	cin>>q;
	
	vector<int> prefixSum(n);
	
	prefixSum[0] = numbers[0];
	
	for(int i=1; i<n; i++){
		prefixSum[i] = prefixSum[i - 1] + numbers[i];
	}
	
	while(q--){
		int L,R;
		cin>>L>>R;
		
		int sum = 0;
		
		sum = prefixSum[R];
		
		if(L>0){
			sum -= prefixSum[L-1];
		}
		
		cout<<sum<<" ";
	}
	
	return 0;
}