#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define F first
#define S second
#define ld long double
#define ll long long
#define TIME 1.0*clock()/CLOCKS_PER_SEC

mt19937 gen(chrono::system_clock::now().time_since_epoch().count());

const int N = 1e5 + 10;
const ll MOD = 1e9 + 7;
const int rx[8] = {-1, -1, -1, 0, 1, 1, 1, 0};
const int ry[8] = {-1, 0, 1, 1, 1, 0, -1, -1};
const ld eps = 1e-7;
const double pi = acos(-1.0);
const int INF = 2e9;

int main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#else
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
#endif
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n;
    cin >> n;
    int a[n];
    for (int i = 0; i < n; i++) cin >> a[i];
    int kol = 1;
    for (int i = 1; i < n; i++) if (a[i] > a[i - 1]) kol ++;
    if (kol % 2 == 0) cout << "Alice" << endl;
    else cout << "Bob" << endl;
    return 0;
}