#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define sz(x) (int) x.size()
#define endl '\n'
#define pb push_back
#define _ ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ii = pair<int,int>;
using iii = tuple<int,int,int>;
const int inf = 2e9+1;
const int mod = 1e9+7;
const int maxn = 3e5+100;
template<typename X, typename Y> bool ckmin(X& x, const Y& y) { return (y < x) ? (x=y,1):0; }
template<typename X, typename Y> bool ckmax(X& x, const Y& y) { return (x < y) ? (x=y,1):0; }
int main(){_
int n;cin>>n;
vector<ll>v(n);
for(auto&x:v)cin>>x;
int ans = 1;
ll last = v[0], tmp = 0, ok = 0;
for(ll i=1;i<n;++i){
tmp += v[i];
if(tmp>=last){
if(!ok){
int ptr = 1;
while(tmp-v[ptr]>=last+v[ptr])tmp -= v[ptr], last += v[ptr], ptr++;
ok = 1;
}
last = tmp, tmp = 0, ++ans;
}
}
cout<<ans<<endl;
}
