#include <bits/stdc++.h>
using namespace std;
#define int long long
int A[41];
int sol(int n, int k) {
if (k < 0) return 0;
if (n == 0) return 1;
return sol(n - 1, k - A[n]) + sol(n - 1, k);
}
signed main() {
int n, k; cin >> n >> k;
for (int i = 1;i <= n;i++) cin >> A[i];
cout << sol(n, k);
return 0;
}
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