#include <bits/stdc++.h>
using namespace std;
inline int toInt(string s) {
  int v;
  istringstream sin(s);
  sin >> v;
  return v;
}
template <class T>
inline string toString(T x) {
  ostringstream sout;
  sout << x;
  return sout.str();
}
template <class T>
inline T sqr(T x) {
  return x * x;
}
const double EPS = 1e-10;
const double PI = acos(-1.0);
template <typename T>
istream &operator>>(istream &is, vector<T> &vec) {
  for (T &x : vec) is >> x;
  return is;
}
template <typename T, typename U>
ostream &operator<<(ostream &os, pair<T, U> &pair_var) {
  os << "(" << pair_var.first << ", " << pair_var.second << ")";
  return os;
}
template <typename T>
ostream &operator<<(ostream &os, const vector<T> &vec) {
  os << "{";
  for (int i = 0; i < vec.size(); i++) {
    os << vec[i] << (i + 1 == vec.size() ? "" : ", ");
  }
  os << "}";
  return os;
}
template <typename T>
ostream &operator<<(ostream &os, const list<T> &lst) {
  os << "{";
  for (auto itr = lst.begin(); itr != lst.end(); itr++) {
    os << *itr;
    itr++;
    if (itr != lst.end()) os << ", ";
    itr--;
  }
  os << "}";
  return os;
}
template <typename T, typename U>
ostream &operator<<(ostream &os, map<T, U> &map_var) {
  os << "{";
  for (auto itr = map_var.begin(); itr != map_var.end(); itr++) {
    os << *itr;
    itr++;
    if (itr != map_var.end()) os << ", ";
    itr--;
  }
  os << "}";
  return os;
}
template <typename T>
ostream &operator<<(ostream &os, set<T> &set_var) {
  os << "{";
  for (auto itr = set_var.begin(); itr != set_var.end(); itr++) {
    os << *itr;
    itr++;
    if (itr != set_var.end()) os << ", ";
    itr--;
  }
  os << "}";
  return os;
}
void dump_func() { cerr << endl; }
template <class Head, class... Tail>
void dump_func(Head &&head, Tail &&...tail) {
  cerr << head;
  if (sizeof...(Tail) > 0) {
    cerr << ", ";
  }
  dump_func(std::move(tail)...);
}
int n, a;
int x[51];
int main(int argc, const char *argv[]) {
  cin >> n >> a;
  for (int i = (0); i < (n); ++i) {
    cin >> x[i];
    x[i] -= a;
  }
  map<int, int> m;
  m[0] = 1;
  for (int i = (0); i < (n); ++i) {
    map<int, int> mTmp = m;
    for (auto &[k, v] : mTmp) {
      m[k + x[i]] += v;
    }
  }
  cout << m[0] - 1 << endl;
  return 0;
}
