#include <bits/stdc++.h>
// #pragma GCC optimize("O3", "unroll-loops")
#define ll long long
#define int long long
#define pb push_back
#define fi first
#define se second
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
#define ld long double
using namespace std;
typedef pair<int,int> pii;
typedef pair<pii, int> ipii;
const int MAXN = 520;
const int MAXA = 9e3+20;
const ll INF = 1e9+10;
const int LOG = 19;
const int SQRT = 450;
const vector<int> NOL = {};
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const vector<int> dx = {1, -1, 0, 0};
const vector<int> dy = {0, 0, 1, -1};
vector <int> key = {29, 31};
vector <int> mod = {998244353, 1000000007};
void chmx(int &a, int b){ a = max(a, b); }
int n;
int dp[MAXN][MAXN], a[MAXN], pr[MAXN];
int GET(int x, int y){
return pr[y]-pr[x-1];
}
signed main(){
// ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n;
for(int i=1; i<=n; i++){ cin >> a[i]; pr[i] = pr[i-1]+a[i]; }
for(int i=0; i<=n; i++){
for(int j=1; j<=n; j++) dp[i][j] = -INF;
if(i!=0) dp[i][0] = 1;
}
for(int i=1; i<=n; i++){
for(int j=1; j<=i; j++){ // dp[i][j] --> terakhir take j-i
for(int k=0; k<=j-1; k++){ // dp[j-1][k] --> terakhir take k-j
if(GET(k, j-1) <= GET(j, i))
chmx(dp[i][j], dp[j-1][k]+1);
}
}
}
int MX = 0;
for(int i=0; i<=n; i++) chmx(MX, dp[n][i]);
cout << MX << '\n';
}
