#include <bits/stdc++.h>
using namespace std;
//14888 ㄱㄱ
int n,m;
bool isused[25];
int num[25];
int total=0;
int cnt=0

void func(int now_n,int total){
    if(now_n==n && total==m){
        cnt++;
        return;
    }
    func(now_n+1,total);
    func(now_n+1,total+num[now_n]);
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> n >> m;
    for(int i=0; i<n; i++) {
        cin >> num[i];
    }
    func(0,0);
    if(m==0) cnt--;
    cout << cnt;
    return 0;
}

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