Envío 5830

Código

import java.io.*;
import java.util.StringTokenizer;
import java.util.*;

class Main
{
    public static void main(String[] args) throws IOException{
        List<Integer> arr = new ArrayList<Integer>();
        List<Integer> res = new ArrayList<Integer>();
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st;
        st=new StringTokenizer(br.readLine());
        st=new StringTokenizer(br.readLine());
        while(st.hasMoreTokens()){
            arr.add(Integer.parseInt(st.nextToken()));
        }
        st=new StringTokenizer(br.readLine());
        int x = Integer.parseInt(st.nextToken());
        int cont = 0;
        while(x>0){
            st=new StringTokenizer(br.readLine());
            int p = Integer.parseInt(st.nextToken());
            int q = Integer.parseInt(st.nextToken());
            for(int i=p;i<=q;i++){
                cont+=arr.get(i);
            }
            res.add(cont);
            cont = 0;
            x--;
        }
        for(int i : res){
            System.out.println(i);
        }
    }
}