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

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int k = sc.nextInt();
        long[] plus = new long[1 << n];
        long[] multi = new long[1 << n];
        for (int i = 0; i < n; i++) {
            plus[1 << i] = sc.nextInt();
            multi[1 << i] = plus[1 << i];
        }
        HashSet<Long> counts = new HashSet<>();
        for (int i = 1; i < (1 << n); i++) {
            if (plus[i] == 0) {
                int mask = (i & (i - 1));
                plus[i] = plus[mask] + plus[i ^ mask];
                multi[i] = multi[mask] * multi[i ^ mask];
            }
            if (getPop(i) >= k) {
                counts.add(plus[i]);
                counts.add(multi[i]);
            }
        }
        System.out.println(counts.size());
    }
    
    static int getPop(int x) {
        int pop = 0;
        while (x > 0) {
            pop += x % 2;
            x >>= 1;
        }
        return pop;
    }
}
    
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
    
}