#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<int, int> pii;
typedef pair<ld, ld> pld;
ll n;
ll a[500009], pre[500009];
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
//freopen("in.txt", "r", stdin);
//freopen("out.txt", "w", stdout);
cin >> n;
for(ll i = 0; i < n; ++i){
cin >> a[i];
pre[i] = a[i];
if(i)
pre[i] += pre[i-1];
}
ll ans = 1;
ll curidx = 0;
ll cursum = pre[0];
for(ll i = 1; i < n; ++i){
if(pre[i]-pre[curidx] >= cursum){
while(pre[i]-pre[curidx+1] >= cursum+a[curidx+1]){
curidx++;
cursum += a[curidx];
}
cursum = pre[i]-pre[curidx];
curidx = i;
++ans;
}
}
cout << ans << '\n';
}
