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#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define v vector
#define ALL(_) _.begin(), _.end()
#define pb push_back
#define FF first
#define SS second
ll ile;
v<ll>aa;
bool da_sie(ll wielk){
    v<ll>kon(ile, 0);
    ll akt = 0;
    for(ll i=0;i<ile;i++){
        if(akt > aa[i]) return false;
        if(akt < aa[i]){
            if(i + wielk - 1 < ile){
                kon[i+wielk - 1] += aa[i] - akt;
            }
            else{
                return false;
            }
            akt = aa[i];
        }
        akt -= kon[i];
    }
    return true;
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>ile;
    aa.resize(ile);
    ll sum = 0;
    for(ll i=0;i<ile;i++){
        cin>>aa[i];
        sum += aa[i];
    }
    for(ll i = min(ile, sum);i>1;i--){
        if(sum % i == 0 && da_sie(i)){
            cout<<i;
            return 0;
        }
    }
    cout<<1;
}