#include <iostream>
#include <cstdio>
#include <string>
#include <algorithm>
#include <utility>
#include <cmath>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <tuple>
#include <numeric>
#include <functional>
using namespace std;
typedef long long ll;
typedef vector<ll> vl;
typedef vector<vector<ll>> vvl;
typedef pair<ll, ll> P;
#define rep(i, n) for(ll i = 0; i < n; i++)
#define exrep(i, a, b) for(ll i = a; i <= b; i++)
#define out(x) cout << x << endl
#define exout(x) printf("%.10f\n", x)
#define chmax(x, y) x = max(x, y)
#define chmin(x, y) x = min(x, y)
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define pb push_back
#define re0 return 0
const ll mod = 998244353;
const ll INF = 1e16;

ll dp[51][51][5001];  // dp[i][j][k] : i項目までで、j個選んで、総和がkとなる場合の数
  
int main() {
    ll n;
    cin >> n;

    vl a(n);
    rep(i, n) {
        cin >> a[i];
    }
    sort(all(a));
    
    dp[0][0][0] = 1;
    rep(i, n) {
        exrep(j, 0, n-1) {
            exrep(k, 0, 100*n) {
                // a[i]を選ばないとき
                dp[i+1][j][k] += dp[i][j][k];
                // a[i]を選ぶとき
                if(k + a[i] <= 100*n) {
                    dp[i+1][j+1][k + a[i]] += dp[i][j][k];
                }
            }
        }
    }
    
    ll ans = n * (n - 1) / 2;
    exrep(i, 2, n-1) {  // a[i]を末尾の要素とする
        exrep(j, 2, n) {
            exrep(k, 0, 100*n) {
                if(k == (j - 1) * a[i]) {
                    ans += dp[i][j][k];
                }
            }
        }
    }

    out(ans);
    re0;
}