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//mam nadzieje ze załapię się na koszulkę ;)
//dzień 2 czekania, aż organizator napisze 67 na ogłoszeniach!
//////////////////////////////////////////////////
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define tak cout<<"TAK\n"
#define yes cout<<"YES\n"
#define nie cout<<"NIE\n"
#define no cout<<"NO\n"
using ll = long long;
using ld = long double;
using pll = pair<ll,ll>;
using pdd = pair<ld,ld>;
#define vec vector
#define all(x) (x).begin(), (x).end()
#define sz(x) (x).size()
#define linijki ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define mapa map<ll,ll>
#define umapa unordered_map<ll,ll>
#define se set<ll>
#define ff first
#define ss second
#define str string
#define st stack<ll>
const ll alph = 26;
const ll BIN6 = (1LL << 20);
const ll BIN9 = (1LL << 30);
const ll BIN18 = (1LL << 60);
const ll INF5 = 100000;
const ll INF6 = 1000000;
const ll INF9 = 1000000000;
const ll INF18 = 1000000000000000000;
const ld DINF5 = 1e5L;
const ld DINF6 = 1e6L;
const ld DINF9 = 1e9L;
const ll MOD = 1000000007;

vec<ll> a;
ll n;

bool czy(ll k){
    vec<ll> roz(n+2);
    ll akt=0;
    for(ll i=1;i<=n;i++){
        akt+=roz[i];
        if(akt>a[i]){ 
            return false;
        }
        if(akt<a[i]){
            ll ile=a[i]-akt;
            if(i+k-1>n){
               return false; 
            } 
            akt+=ile;
            roz[i+k]-=ile;
        }
    }
    return true;
}

int main(){
    linijki;
    cin>>n;
    a.resize(n+1);
    ll sm=0;
    for(ll i=1;i<=n;i++){
        cin>>a[i];
        sm+=a[i];
    }
    
    for(ll i=INF6; i>=1; --i){
        if(sm%i==0){
            if(czy(i)){
                cout<<i;
                return 0;
            }
        }
    }
}