Bank Account

import java.util.Scanner;

public class BankAccount {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		
        final int amountDays = scan.nextInt();
        final int amountQueries = scan.nextInt();
        
        final int[] eveningBalancePerDay = new int[amountDays+1];
        final int[] queryResults = new int[amountQueries];
        
        
        int eveningBalancePreviousDay = 0;
        for(int day = 1; day <= amountDays ; day++) {
        	eveningBalancePerDay[day] = eveningBalancePreviousDay += scan.nextInt();
        }
        StringBuilder output = new StringBuilder();
        
        for(int queryIndex = 0; queryIndex < amountQueries; queryIndex++) {
        	int startDayEvening = scan.nextInt() - 1;
        	int endDayEvening = scan.nextInt();
        	output.append(eveningBalancePerDay[endDayEvening] - eveningBalancePerDay[startDayEvening]);
        	output.append('\n');
        }        
        System.out.println(output.toString());
	}

}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: ACCEPTED

Test 19

Verdict: ACCEPTED

Test 20

Verdict: ACCEPTED