//gm --- akezhon
#include <bits/stdc++.h>
// #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define pb push_back
#define pf push_front
#define F first
#define S second
#define all(v) v.begin(),v.end()
#define pii pair<int,int>
#define tm (tl+tr)/2
#define TL v+v, tl, tm
#define TR v+v+1, tm+1, tr
#define DA l <= tl && tr <= r
#define NE r < tl || tr < l
#define int long long
using namespace std;
const int N=5e5+7;
const int mod=998244353;
const int inf=2e18;
int dp[N];
int sm[N];
int a[N];
int p[N];
int n;
void AlemAmenov(){
cin >> n;
for(int i=1; i<=n; i++){
cin >> a[i];
p[i] = p[i-1] + a[i];
sm[i]=inf;
}
for(int i=1; i <= n; i++){
for(int j=i-1; j >= 0; j--){
if(dp[i] < dp[j] || (dp[i]==dp[j] && sm[j]+p[i]-p[j] < sm[i])){
dp[i]=dp[j];
sm[i]=sm[j]+p[i]-p[j];
}
if(sm[j] <= p[i]-p[j] && dp[i] < dp[j]+1 || (dp[i]==dp[j]+1 && p[i]-p[j] < sm[i])){
dp[i]=dp[j]+1;
sm[i]=p[i]-p[j];
}
}
}
cout << dp[n];
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
int RealName=1;
// cin >> RealName;
// srand(time(0));
while(RealName--)
AlemAmenov();
return 0;
}
