#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic pop
using namespace std;
using namespace atcoder;
#define rep(i,n)for (int i = 0; i < int(n); ++i)
#define rrep(i,n)for (int i = int(n)-1; i >= 0; --i)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
template<class T> void chmax(T& a, const T& b) { a = max(a, b); }
template<class T> void chmin(T& a, const T& b) { a = min(a, b); }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
using mint = ll;

mint dp[51][5001];

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  dp[0][0] = 1;
  int n;
  cin >> n;
  VI a(n);
  rep(i, n) cin >> a[i];
  sort(all(a));
  mint ans = 0;
  for (int x: a) {
    rrep(k, n) rrep(s, 5001) if (dp[k][s] != mint()) {
      int nk = k + 1, ns = s + x;
      if (nk > 1) {
        if (ns % (nk - 1) == 0) {
          int t = ns / (nk - 1);
          if (x <= t) ans += dp[k][s];
        }
      }
      dp[nk][ns] += dp[k][s];
    }
  }
  cout << ans << endl;
}