#include "bits/stdc++.h"
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
vector<ll> a(n + 1);
for (int i = 1; i <= n; i++) {
cin >> a[i];
a[i] += a[i - 1];
}
int en = 1, cnt = 1;
ll val = a[1];
while (true) {
if (a[n] < a[en] + val) {
break;
}
int new_en = en + 1;
while (a[new_en] < a[en] + val) {
new_en++;
}
ll new_val = a[new_en] - a[en];
while (new_val - a[en + 1] + a[en] >= val + a[en + 1] - a[en]) {
new_val -= a[en + 1] - a[en];
val += a[en + 1] - a[en];
en++;
}
en = new_en;
val = new_val;
cnt++;
}
cout << cnt;
return 0;
}
