import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;


public class N1330 {



    public static void main(String[] args) {

        try {
            BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
            int n = Integer.parseInt(in.readLine());
            int list[] = new int[n];
            for (int i = 0; i < n; i++)
                list[i] = Integer.parseInt(in.readLine());
            int q = Integer.parseInt(in.readLine());
            for (int i = 0; i < q; i++) {
                int sum = 0;
                StringTokenizer tok = new StringTokenizer(in.readLine());
                int start = Integer.parseInt(tok.nextToken())-1;
                int end = Integer.parseInt(tok.nextToken())-1;
                for (int j = start; j <= end; j++)
                    sum += list[j];
                System.out.println(sum);
            }

        }
        catch(IOException e) {

        }

    }

}