// compile: make data
// run: time ./data < data.in
#include <bits/stdc++.h>
using namespace std;
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#ifdef LOCAL
#include <debug/codeforces.h>
#define debug(x...) _debug_print(#x, x);
#define Debug(x...) _debug_print_format(#x, x);
std::ifstream terminal("/dev/tty");
#define PP cerr<<"\033[1;30mpause...\e[0m",terminal.ignore();
#else
#define debug(x...)
#define Debug(x...)
#define PP
#endif
template<typename...Args> void print_(Args...args){((cout<<args<<" "),...)<<endl;}
#define rep(i,a,b) for(int i=(a);i<(int)(b);++i)
#define sz(v) ((int)(v).size())
#define print(...) print_(__VA_ARGS__);
#define FIND(a, x) ((find(a.begin(),a.end(),(x))!=a.end())?1:0)
#define cmin(x,...) x=min({(x),__VA_ARGS__})
#define cmax(x,...) x=max({(x),__VA_ARGS__})
#define INTMAX (int)(9223372036854775807)
#define INF (int)(1152921504606846976)
#define NaN (int)(0x8b88e1d0595d51d1)
#define double long double
#define int long long
#define uint unsigned long long
#define MAXN 200010
int32_t main() {
ios::sync_with_stdio(false); cin.tie(nullptr); cout.tie(nullptr);
int n, m; cin >> n >> m;
vector<int> a(n/2), b(n - n/2);
rep(i, 0, n/2) cin >> a[i];
rep(i, 0, n - n/2) cin >> b[i];
unordered_map<int, int> L;
int ans = 0;
rep(mask, 0, 1<<(sz(a))) {
int sum = 0;
rep(i, 0, sz(a)) if (mask & (1<<i)) sum += a[i];
if (sum > m) continue;
++L[sum];
}
rep(mask, 0, 1<<(sz(b))) {
int sum = 0;
rep(i, 0, sz(b)) if (mask & (1<<i)) sum += b[i];
if (sum > m) continue;
auto it = L.find(m - sum);
if (it == L.end()) continue;
ans += it->second;
}
cout << ans << endl;
return 0;
}
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