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///MEMENTO MEMO, MEMENTO LONG LONG
#include <bits/stdc++.h>

#define DEBUG if(0)
#define COUT cout << "\e[36m"
#define ENDL "\e[39m" << endl
#define VAR(v) " [\e[32m" << #v << "\e[36m=\e[91m" << v << "\e[36m] "

using namespace std;
typedef long long LL;

const LL P = 1e9+7;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int n;
    cin >> n;
    vector<int> bags(n);
    for (int i = 0; i < n; ++i)
    {
        cin >> bags[i];
    }
    sort(bags.begin(), bags.end());

    int maxBag = bags.back();

    vector<LL> poss(maxBag+1);

    for (auto bag : bags)
    {

        
        {
            vector<LL> prev = poss;
            for (int i = bag-1; i <= maxBag; ++i)
            {
                poss[min(maxBag, i+bag)] += prev[i];
                poss[min(maxBag, i+bag)] %= P;
            }
        }
        DEBUG
        {
            COUT << VAR(bag) << ENDL;
            for(auto el : poss)
                COUT << el << " ";
            COUT << ENDL;
        }
        if(bag == 1)
        {
            poss[1]++;
        }

    }
    LL ans = 0;
    for (auto el : poss)
    {
        ans +=  el;
        ans %= P;
    }
    cout << ans << "\n";
    return 0;
}