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#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <set>
#include <map>
#include <utility>
#include <queue>
#include <vector>
#include <string>
#include <cstring>

#define REP(a,n) for (int a = 0; a<(n); ++a)
#define FOR(a,b,c) for (int a = (b); a<=(c); ++a)
#define FORD(a,b,c) for (int a = (b); a>=(c); --a)
#define FOREACH(a,v) for (auto a : v)

#define MP make_pair
#define PB push_back

template<class T> inline int size(const T&t) { return t.size(); }

using namespace std;

typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<string> vs;
typedef long long LL;

///////////////////////////////

#define MOD 1'000'000'007

int cuk[5000], res[5001] = {1}, N;

int main() {
  std::ios::sync_with_stdio(false);
  cin >> N;
  REP(a, N)
    cin >> cuk[a];
  sort(cuk, cuk + N);
  REP(a, N) {
    FORD(x, 5000, cuk[a] - 1) {
      int z = min(5000, x + cuk[a]);
      res[z] = (res[z] + res[x]) % MOD;
    }
  }
  int s = 0;
  FOR(a, 1, 5000)
    s = (s + res[a]) % MOD;
  cout << s << endl;
}