#include <bits/stdc++.h>

using namespace std;

using ll = long long;
using ul = unsigned long;
using ull = unsigned long long;

int getFactors(const ll n, set<ll>& f)
{
	int res{ 0 };
	for (ll i = 1; i * i <= n; ++i)
	{
		if (n % i == 0)
		{
			f.insert(i);
			++res;
			auto p = f.insert(n / i);
			if (p.second)
				++res;
		}
	}

	return res;
}

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	ll n;
	cin >> n;

	set<ll> sum;
	ll t{ 0 };
	ll a;
	for (int i = 0; i < n; ++i)
	{
		cin >> a;
		t += a;
		sum.insert(t);
	}

	ll res{ 1 };
	if (n > 1)
	{
		set<ll> s;
		getFactors(t, s);
		auto it = s.end();
		s.erase(--it);

		for (auto it = s.begin();
			it != s.end();
			++it)
		{
			bool f{ true };
			for (int j = 1; j <= t / *it; ++j)
			{
				if (!sum.count(*it * j))
				{
					f = false;
					break;
				}
			}
			if (f)
			{
				res = t / *it;
				break;
			}
		}
	}

	cout << res << "\n";

	return 0;
}