#include <bits/stdc++.h>
#include <ext/rope>
#include <random>
#include <chrono>
#include <ext/pb_ds/assoc_container.hpp>
#define file ""
#define all(x) x.begin(), x.end()
#define sc second
#define fr first
#define pb push_back
#define mp make_pair
#define pss pair<line*, line*>
using namespace std;
using namespace __gnu_cxx;
typedef long long ll;
typedef pair <int, int> pii;
const int inf = 1e9;
const int MOD = 1e9 + 7;
const int dx[] = {+1, -1, 0, 0};
const int dy[] = {0, 0, +1, -1};
int const N = 5e5 + 1;
int main() {
ios_base :: sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
vector<ll> a(n + 1), pref(n + 1);
for (int i = 1; i <= n; i++)
cin >> a[i];
for (int i = 1; i <= n; i++)
pref[i] = pref[i - 1] + a[i];
vector<pair<ll, ll>> dp(n + 1);
for (int i = 1; i <= n; i++) {
for (int j = 0; j < i; j++) {
if (pref[i] - pref[j] >= dp[j].sc) {
if (dp[j].fr + 1 >= dp[i].fr) {
dp[i].fr = dp[j].fr + 1;
dp[i].sc = pref[i] - pref[j];
}
}
}
}
/*for (int i = 1; i <= n; i++) {
cout << dp[i].fr << " " << dp[i].sc << endl;
} */
cout << dp[n].fr;
return 0;
}
