#include <bits/stdc++.h>
using namespace std;
#define int long long
const int inf = 2e18;
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(nullptr); cout.tie(nullptr);
int n, ans = 1;
cin >> n;
vector<int> a(n + 1, 0), pref(n + 5, 0);
vector<pair<int, int>> dp(n + 5, {0, inf});
for(int i = 1; i <= n; ++i){
cin >> a[i];
pref[i] = pref[i - 1] + a[i];
}
dp[0] = {0, 0};
for(int i = 1; i <= n; ++i){
for(int j = i; j >= 1; --j){
if(pref[i] - pref[j - 1] >= dp[j - 1].second && dp[i].first < dp[j - 1].first + 1){
dp[i] = {dp[j - 1].first + 1, pref[i] - pref[j - 1]};
}
}
}
cout << dp[n].first << "\n";
return 0;
}
