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#include <bits/stdc++.h>

using namespace std;

#define JOIN_(X, Y) X##Y
#define JOIN(X, Y) JOIN_(X, Y)
#define TMP JOIN(tmp, __LINE__)
#define PB push_back
#define SZ(x) int((x).size())
#define REP(i, n) for (int i = 0, TMP = (n); i < TMP; ++i)
#define FOR(i, a, b) for (int i = (a), TMP = (b); i <= TMP; ++i)
#define FORD(i, a, b) for (int i = (a), TMP = (b); i >= TMP; --i)

#ifdef DEBUG
#define DEB(x) (cerr << x)
#else
#define DEB(x)
#endif

typedef long long ll;
typedef pair<int, int> pii;

const ll INF = 1e17 + 9;

struct State {
    ll added;          // dodane do wszystkich values
    vector<ll> values; // malejaco

    int get_last_non_negative_position() const {
        auto it = upper_bound(values.begin(), values.end(), -added, greater<ll>());
        return it - values.begin();
    }

    ll get(int position) { return values[position] + added; }

    void compute(int position) {
        if (position == 0) {
            // powinno byc values[0] = 0, ale zawsze tak jest dla pozycji 0
        } else if (position == SZ(values)) {
            values.PB(-added);
        } else {
            values[position] = max(values[position], -added);
        }
    }
};

void inline one() {
    int n;
    cin >> n;
    vector<ll> in(n);
    REP(i, n) { cin >> in[i]; }
    State state;
    REP(i, n) {
        if (i == 0) {
            state.values.PB(0);
            state.added = in[i];
        } else {
            int position = state.get_last_non_negative_position();
            DEB("position=" << position << "\n");
            state.compute(position);
            state.added += in[i];
        }
        DEB(i + 1 << " (" << in[i] << ") :   ");
        REP(j, SZ(state.values)) { DEB(state.get(j) << " "); }
        DEB("\n");
    }
    int save = n;
    REP(j, SZ(state.values)) {
        DEB("g=" << state.get(j) << ", ");
        if (state.get(j) >= 0) {
            save = j;
        }
    }
    cout << n - 1 - save << "\n";
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    // int z; cin >> z; while(z--)
    one();
}