#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
using u64 = uint64_t;

int n;
i64 sum = 0;
vector<int> arr;

bool check(int k) {
    vector<int> deactivate(n + k + 1);
    i64 active = 0;

    for (int i = 0; i < n; i++) {
        active -= deactivate[i];
        
        if (arr[i] - active < 0) return false;
        if (arr[i] - active > 0) {
            if (i + k > n) return false;
            deactivate[i + k] = arr[i] - active;
            active += arr[i] - active;
        }
    }

    return true;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    cin >> n;
    arr.resize(n);
    for (int i = 0; i < n; i++) {
        cin >> arr[i];
        sum += arr[i];
    }

    int ans = 0;

    if (sum != 0) {
        for (int k = n; k >= 1; k--) {
            if (sum % k == 0 && check(k)) {
                ans = k;
                break;
            }
        }
    }

    cout << ans << "\n";
}