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

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, k, t, mn = 1 << 30;
    string s, s2;
    cin >> n >> k >> t >> s;
    k--;
    if(t <= 500){
        vector<vector<int>> dp(n, vector<int>(501, -1));
        function<int(int,int)> rec = [&](int i, int t){
            if(t == 0) return s[i] == 'A' ? 0 : 1;
            if(dp[i][t] != -1) return dp[i][t];
            if(s[i] == 'A'){
                if(i >= 1 && rec(i - 1, t - 1) == 1) return dp[i][t] = 1;
                if(i + 1 < n && rec(i + 1, t - 1) == 1) return dp[i][t] = 1;
                return dp[i][t] = 0;
            }
            if(i >= 1 && rec(i - 1, t - 1) == 0) return dp[i][t] = 0;
            if(i + 1 < n && rec(i + 1, t - 1) == 0) return dp[i][t] = 0;
            return dp[i][t] = 1;
        };
        cout << (rec(k, t) ? "Alice" : "Bob") << '\n';
        return 0;
    }
    for(int i = k; i + 1 < n; i++){
        if(s[i] != s[i + 1]){
            mn = min(mn, i + 1 - k);
            break;
        }
    }
    for(int i = k; i >= 1; i--){
        if(s[i] != s[i - 1]){
            mn = min(mn, k - (i - 1));
            break;
        }
    }
    if(mn > t){
        cout << (s[k] == 'A' ? "Bob" : "Alice") << '\n';
        return 0;
    }
    char tmp = s[k];
    s[k] = 'C';
    vector<pair<char,int>> b;
    for(int i = 0; i < n; ){
        int p = i;
        while(i < n && s[i] == s[p]) i++;
        b.emplace_back(s[p], i - p);
    }
    
    for(int i = 0; i < b.size(); i++){
        char c;
        int v;
        tie(c, v) = b[i];
        if(c == 'C'){
            k = s2.size();
            s2 += tmp;
            continue;
        }
        s2 += string(v % 2 + (v >= 2) * 2, c);
    }
    swap(s, s2);
    n = s.size();
    t %= 50;
    t += 50;
    vector<vector<int>> dp(n, vector<int>(101, -1));
    function<int(int,int)> rec = [&](int i, int t){
        if(t == 0) return s[i] == 'A' ? 0 : 1;
        if(dp[i][t] != -1) return dp[i][t];
        if(s[i] == 'A'){
            if(i >= 1 && rec(i - 1, t - 1) == 1) return dp[i][t] = 1;
            if(i + 1 < n && rec(i + 1, t - 1) == 1) return dp[i][t] = 1;
            return dp[i][t] = 0;
        }
        if(i >= 1 && rec(i - 1, t - 1) == 0) return dp[i][t] = 0;
        if(i + 1 < n && rec(i + 1, t - 1) == 0) return dp[i][t] = 0;
        return dp[i][t] = 1;
    };
    cout << (rec(k, t) ? "Alice" : "Bob") << '\n';
}