#include<bits/stdc++.h>
#define int long long
using namespace std;
const int maxn = 105;
int n, sum, cnt, x, y;
int a[maxn];
int dp[100005];
signed main() {
    // freopen("c.in", "r", stdin);
    // freopen("c.out", "w", stdout);
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> a[i]; sum += a[i] * i;
        if (a[i]) x = y, y = i;
    }
    int hg = max((x == 0 ? y * y : x * y), sum);
    dp[0] = 1;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= min(2 * hg / i, a[i]); j++)
            for (int k = 2 * hg; k >= i; k--)
                dp[k] |= dp[k - i];
    for (int i = 1; i <= hg; i++) cnt += dp[i];
    cnt *= sum / hg;
    for (int i = 1; i <= sum % hg; i++) cnt += dp[i];
    cout << cnt + 1 << '\n';
    return 0;
}