#include <bits/stdc++.h>
using namespace std;
using LL = long long;
constexpr LL mod = 998244353;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, k, t;
    string s;
    cin >> n >> k >> t >> s;
    k -= 1;
    vector<int> l(n), r(n);
    for (int i = 0; i < n; i += 1) {
        if (i and s[i - 1] == s[i]) {
            l[i] = l[i - 1];
        } else {
            l[i] = i;
        }
    }
    for (int i = n - 1; i >= 0; i -= 1) {
        if (i + 1 < n and s[i + 1] == s[i]) {
            r[i] = r[i + 1];
        } else {
            r[i] = i;
        }
    }
    map<char, string> ans = {{'A', "Alice"}, {'B', "Bob"}};
    function<char(int, int)> f = [&](int k, int t) -> char {
        if ((k + t <= r[k] or r[k] == n - 1) and (k - t >= l[k] or l[k] == 0)) {
            return 131 - s[k];
        }
        if (l[k] == r[k]) {
            if (t % 2 == 0) {
                return 131 - s[k];
            }
            int l = k ? f(k - 1, t - 1) : 131 - s[k];
            int r = k + 1 < n ? f(k + 1, t - 1) : 131 - s[k];
            return l == s[k] or r == s[k] ? s[k] : 131 - s[k];
        }
        if ((r[k] - l[k]) % 2 == 0) {
            if ((k - l[k] + 1) % 2 == t % 2) {
                return s[k];
            }
            return s[k] ^ 1;
        }
        if (l[k] > 0 and k - l[k] < t and (k - l[k] + 1) % 2 == t % 2) {
            return s[k];
        }
        if (r[k] + 1 < n and r[k] - k < t and (r[k] - k + 1) % 2 == t % 2) {
            return s[k];
        }
        if (l[k] > 0 and k - l[k] < t) {
            return f(l[k] - 1, t - (k - l[k] + 1));
        }
        return f(r[k] + 1, t - (r[k] - k + 1));
    };
    cout << ans[f(k, t)];
}