[9084번] 동전

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.StringTokenizer;
 
public class Main {
    public static void main(String[] args) {
        FastScanner sc = new FastScanner();
        int T = sc.nextInt();
        for(int t = 0;t<T;t++){
            int n = sc.nextInt();
            int[] c = new int[n];
            for(int i=0;i<n;i++){
                c[i] = sc.nextInt();
            }
            int g = sc.nextInt();
            int[] dp = new int[g+1];
            dp[0] = 1;
            for(int i=0;i<n;i++){
                for(int j=c[i];j<=g;j++){
                    dp[j] += dp[j-c[i]];
                }
            }
            System.out.println(dp[g]);
        }
        
        
    }
 
}
class FastScanner {
    BufferedReader br;
    StringTokenizer st;
 
    public FastScanner(String s) {
        try {
            br = new BufferedReader(new FileReader(s));
        } catch (FileNotFoundException e) {
            throw new RuntimeException(e);
        }
    }
 
    public FastScanner() {
        br = new BufferedReader(new InputStreamReader(System.in));
    }
 
    String nextToken() {
        while (st == null || !st.hasMoreElements()) {
            try {
                st = new StringTokenizer(br.readLine());
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return st.nextToken();
    }
 
    int nextInt() {
        return Integer.parseInt(nextToken());
    }
 
    long nextLong() {
        return Long.parseLong(nextToken());
    }
 
    double nextDouble() {
        return Double.parseDouble(nextToken());
    }
 
    String nextLine() {
        String str = "";
        try {
            str = br.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return str;
    }
}