// In The Name Of God
//#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")
#include <iostream>
#include <iomanip>
#include <fstream>
#include <vector>
#include <set>
#include <map>
#include <cstring>
#include <string>
#include <bitset>
#include <cmath>
#include <cassert>
#include <ctime>
#include <algorithm>
#include <sstream>
#include <list>
#include <queue>
#include <deque>
#include <stack>
#include <cstdlib>
#include <cstdio>
#include <iterator>
#include <functional>
#include <unordered_set>
#include <unordered_map>
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define sagyndym_seni ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
const ll N = 3005, p1 = 911382323, p2 = 972663749, mod = 1e9+123;
inline int read(){
char c = getchar();
bool minus = 0;
while (c < '0' || '9' < c){
if(c == '-'){ minus = 1;}
c = getchar();
if(c == '-'){ minus = 1;}
}
int res = 0;
while ('0' <= c && c <= '9') {
res = (res << 3) + (res << 1) + c - '0';
c = getchar();
}
if(minus){ res *= -1;}
return res;
}
int n, a[N];
ll pref[N];
ll dp[N][N];
bool used[N][N];
ll get(int l, int r){
if(r < l){ return 0;}
return pref[r] - (l == 0 ? 0 : pref[l-1]);
}
int main(){
sagyndym_seni;
n = read();
for(int i = 0; i < n; i++){
a[i] = read();
pref[i] = a[i] + (i == 0 ? 0 : pref[i-1]);
}
ll ans = 1;
for(int l = n-1; l >= 0; l--){
for(int r = n-1; r >= l; r--){
ll sum = get(l, r);
for(int i = r + 1; i < n; i++){
if(get(r+1, i) >= sum){
dp[l][r] = max(dp[l][r], dp[r+1][i]);
}
}
dp[l][r]++;
}
}
for(int i = 0; i < n; i++){
ans = max(ans, dp[0][i]);
}
cout<<ans;
return 0;
}
/* TIMUS: 292220YC*/
