BOJ11659.java

package ¹éÁØ;

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

public class BOJ11659 {
	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(br.readLine());
		StringBuilder sb = new StringBuilder();
		int N = Integer.parseInt(st.nextToken());
		int M = Integer.parseInt(st.nextToken());
		int[] arr = new int[N+1];
		st = new StringTokenizer(br.readLine());
		for(int i = 1; i <= N; i++) {
			arr[i] = arr[i-1] + Integer.parseInt(st.nextToken());
		}
		for(int x = 0; x < M; x++) {
			int result = 0;
			st = new StringTokenizer(br.readLine());
			int i = Integer.parseInt(st.nextToken());
			int j = Integer.parseInt(st.nextToken());
			
			sb.append(arr[j] - arr[i-1]).append("\n");
		}
		
		System.out.print(sb);
	}
}