[Java] 11659번 구간 합 구하기 4

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

public class Main {
    public static void main(String[] args) throws IOException{
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer stringTokenizer = new StringTokenizer(bufferedReader.readLine());
        int suNo = Integer.parseInt(stringTokenizer.nextToken());
        int quizNo = Integer.parseInt(stringTokenizer.nextToken());
        long[]S = new long[suNo + 1];
        stringTokenizer = new StringTokenizer(bufferedReader.readLine());
        
        for(int i=1; i<=suNo; i++) {
            S[i] = S[i-1] + Integer.parseInt(stringTokenizer.nextToken());
        }
        
        for(int q=0; q<quizNo; q++) {
            stringTokenizer = new StringTokenizer(bufferedReader.readLine());
            int i = Integer.parseInt(stringTokenizer.nextToken());
            int j = Integer.parseInt(stringTokenizer.nextToken());
            System.out.println(S[j] - S[i-1]);
        }
    }
}