Shared code

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;
import java.util.StringTokenizer;
class Main{
    static int m = 1000000007;
	public static void main(String[] args) {
		FastReader in = new FastReader();
		int n = in.nextInt();
		int tar = in.nextInt();
		int[] arr = new int[n];
        String inS[]=in.nextLine().split(" ");

		for(int i=0;i<n;i++)
			arr[i] = Integer.valueOf(inS[i]);
		
		int[] dp = new int[1000005];
		dp[0]=1;
		
		for(int i=1;i<=tar;i++) {
			for(int j=0;j<n;j++)
				if(i-arr[j] >=0){
					dp[i] += dp[i-arr[j]];
                    if(dp[i]>=m)dp[i]-=m;
                }
		}
		
		System.out.println(dp[tar]);
	}
}
    class FastReader {
        BufferedReader br;
        StringTokenizer st;
        
        public FastReader() {
            br = new BufferedReader(
                    new InputStreamReader(System.in));
        }
        
        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                if (st.hasMoreTokens()) {
                    str = st.nextToken("\n");
                } else {
                    str = br.readLine();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }
    }