/*
//\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\\
\\ //
// 271828___182845__904523__53602__ \\
\\ 87___47____13______52____66__24_ //
// 97___75____72______47____09___36 \\
\\ 999595_____74______96____69___67 //
// 62___77____24______07____66__30_ \\
\\ 35___35____47______59____45713__ //
// \\
\\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\//
*/
#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_map>
#include <cmath>
#include <climits>
#include <algorithm>
#include <random>
#include <queue>
#include <deque>
#include <iomanip>
#include <string>
#include <tuple>
#include <bitset>
#include <chrono>
#include <ctime>
#include <fstream>
#include <stack>
#include <cstdio>
using namespace std;
using ll = long long;
int main() {
int n; cin >> n;
vector<ll> v(n), pref(n + 1);
for (int i = 0; i < n; ++i) {
cin >> v[i];
pref[i + 1] = pref[i] + v[i];
}
vector<pair<ll, ll>> dp(n + 1, {0, 0});
dp[1] = { 1, -v[0] };
for (int r = 1; r <= n; ++r) {
dp[r] = max(dp[r], { dp[r - 1].first, -(-dp[r - 1].second + v[r - 1]) });
ll cnt = dp[r].first, sm = -dp[r].second;
ll req = pref[r] + sm;
int id = lower_bound(pref.begin(), pref.end(), req) - pref.begin();
if (id > n) continue;
dp[id] = max(dp[id], { cnt + 1, -(pref[id] - pref[r]) });
}
cout << dp[n].first << "\n";
}
