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#include <bits/stdc++.h>
#define un unsigned
#define rep(i, a, b) for(ll i = a; i < b; i++)
#define per(i, a, b) for(ll i = a; i >= b; i--)
#define all(v) begin(v), end(v)
#define st first
#define nd second
using namespace std;
using ll = long long;
using bigi = __int128;
using pii = pair<ll, ll>;
const ll N = 2e5 + 5;
int tab[N];
int rtab[N];
bool check(ll n, ll c){
    rep(i, 0, n * 2 + 1) rtab[i] = 0;
    int r = 0;
    rep(i, 0, n + 1){
        r += rtab[i];
        if(tab[i] + r < 0){
            return false;
        }
        rtab[i + c] += tab[i] + r;
        r = -tab[i];
    }
    return true;
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n;
    cin >> n;
    ll suma = 0;
    rep(i, 0, n){
        cin >> tab[i];
        suma += tab[i];
    }
    per(i, n, 1){
        if(suma % i == 0 && check(n, i)){
            cout << i << '\n';
            return 0;
        }
    }
}