#include<bits/stdc++.h>
using namespace std;
#pragma GCC optimize ("unroll-loops,Ofast,O3")
#pragma GCC target("avx,avx2,fma")
#define F first
#define S second
#define int long long
#define sz(x) (int)x.size()
#define pb push_back
#define eb emplace_back
#define all(x) (x).begin(),(x).end()
//const int E = 5e5+777;
//const long long inf = 1e18+777;
//const int N = 3e3+777;
//const int MOD = 1e9+7;
int getfast(vector<int> v){
int n = sz(v);
int pref[n+2]{}, a[n+2]{};
for(int i = 0; i < n; ++i) a[i+1] = v[i];
for(int i = 1; i <= n; ++i) pref[i] = pref[i-1] + a[i];
auto get = [&](int l, int r){
if(l == -1 || r == -1) return -(int)1e9;
return pref[r] - pref[l-1];
};
int ans = 1, last = a[1];
for(int i = 2; i <= n; ++i){
int L = i, R = n, res = -1;
while(L <= R){
int M = (L + R) >> 1LL;
if(last <= get(i, M)){
R = (res = M) - 1;
}else L = M + 1;
}
if(last <= get(i, res)){
++ans;
}else break;
int k = i;
for(; k < res; ++k){
// cerr << "k: " << k << " last+k: " << last + k << " get(k+1,res): " << get(k+1,res) << '\n';
if(last + a[k] <= get(k+1, res)){
last += a[k];
}else break;
}
// cerr << "i: " << i << " ans: " << get(k, res) << " l: " << k << " r: " << res << '\n';
last = get(k, res);
// cerr << "last: " << last << '\n';
i = res;
}
return ans;
}
signed main(){
ios_base::sync_with_stdio(0),
cin.tie(0),cout.tie(0);
int n; cin >> n;
vector<int> a(n);
for(auto &i : a) cin >> i;
cout << getfast(a);
}
