JaeHyeonKim19

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

public class Main {
	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer(br.readLine());
		int n = Integer.parseInt(st.nextToken());
		int k = Integer.parseInt(st.nextToken());
		int [] dp = new int[k+1];
		dp[0] = 1;
		int coin = 0;
		for(int i = 0; i < n; i++) {
			coin = Integer.parseInt(br.readLine());
			for(int j = 1; j <= k; j++) {
				if(j >= coin) dp[j] += dp[j - coin];
			}
		}
		System.out.print(dp[k]);
	}
}