#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
typedef int64_t lint;
#define rep(i, n) for(int i=0; i<n; i++)
#define repx(i, l, n) for(int i=l; i<n; i++)
#define all(v) v.begin(), v.end()
#define show(x) cout << #x << ": " << x << endl;
#define list(x) cout << #x << ": " << x << "  ";
#define pb push_back
using vi = vector<lint>;
using vvi = vector<vector<lint>>;
template<class T> inline void vin(vector<T>& v) { rep(i, v.size()) cin >> v.at(i); }
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template<class T> inline void drop(T x) { cout << x << endl; exit(0); }
template<class T> void vout(vector<T> v) { rep(i, v.size()) { cout << v.at(i) << ' '; } cout << endl; }
constexpr lint LINF = LLONG_MAX/2;
lint N, K, T;
string S;
string solve() {
	lint a=0, b=0, c=0, x, y, z;
	repx(i, K+1, N+1) {
		if (i == N) a = -1;
		else if (S[i] == S[K]) a++;
		else break;
	}
	for (lint i = K-1; i >= -1; i--) {
		if (i == -1) b = -1;
		else if (S[i] == S[K]) b++;
		else break;
	}
	if (a > b) swap(a, b);
	if (a == -1) {
		if (b == -1) {
			if (S[K] == 'A') return "Bob";
			else return "Alice";
		} else if (T <= b) {
			if (S[K] == 'A') return "Bob";
			else return "Alice";
		} else if (b%2 != T%2) {
			if (S[K] == 'A') return "Alice";
			else return "Bob";
		} else {
			if (S[K] == 'A') return "Bob";
			else return "Alice";
		}
	} else if (a == 0 && b == 0) {
		return "Empty";
	} else if (a%2 != b%2) {
		if (T <= a) {
			if (S[K] == 'A') return "Bob";
			else return "Alice";
		}
		if (S[K] == 'A') return "Alice";
		else return "Bob";
	} else {
		if (T <= a) {
			if (S[K] == 'A') return "Bob";
			else return "Alice";
		}
		if (b%2 != T%2) {
			if (S[K] == 'A') return "Alice";
			else return "Bob";
		} else {
			if (S[K] == 'A') return "Bob";
			else return "Alice";
		}
	}
}

int main() {
	cin >> N >> K >> T >> S;
	K--;

	lint a=0, b=0, c=0, x, y, z;
	string t = solve();
	if (t != "Empty") drop(t);
	T--;
	string t1, t2;
	if (K == 0) t1 = "Empty";
	else {
		K--;
		t1 = solve();
		K++;
	}
	if (K == N-1) t2 = "Empty";
	else {
		K++;
		t2 = solve();
		K--;
	}
	T++;
	if (t1 == "Empty" && t2 == "Empty") {
		if (T%2) {
			if (S[K] == 'A') drop("Alice");
			else drop("Bob");
		} else {
			if (S[K] == 'A') drop("Bob");
			else drop("Alice");
		}
	} else if (t1 == "Empty") {
		if (t2 == "Alice" && S[K] == 'B' && T%2) drop("Bob");
		if (t2 == "Bob" && S[K] == 'A' && T%2) drop("Alice");
		drop(t2);
	} else if (t2 == "Empty") {
		if (t2 == "Alice" && S[K] == 'B' && T%2) drop("Bob");
		if (t2 == "Bob" && S[K] == 'A' && T%2) drop("Alice");
		drop(t1);
	} else if (t1 != t2) {
		if (S[K] == 'A') drop("Alice");
		else drop("Bob");
	} else {
		drop(t1);
	}
}