[Baekjoon Online Judge] 2003 - 수들의 합 2 / Java

https://www.acmicpc.net/problem/2003

2003번: 수들의 합 2

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

public class Main {

	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int answer = 0;

		StringTokenizer st = new StringTokenizer(br.readLine());
		int N = Integer.parseInt(st.nextToken());
		int M = Integer.parseInt(st.nextToken());
		int[] arr = new int[N];

		st = new StringTokenizer(br.readLine());
		for (int i = 0; i < N; i++) {
			arr[i] = Integer.parseInt(st.nextToken());
		}

		for (int start = 0; start < N; start++) {
			int sum = 0;

			for (int i = start; i < N; i++) {
				if (sum < M) {
					sum += arr[i];
				}
				if (sum == M) {
					answer++;
					break;
				}
			}
		}

		System.out.println(answer);
	}
}