fn main() {
    input! {
        n: usize,
        k: usize1,
        t: usize,
        s: bytes,
    }
    // 先手 が勝つか
    let ans = (|| -> bool {
        if (k > 0 && s[k - 1] == s[k]) || (k + 1 < n && s[k] == s[k + 1]) {
            let c = s[k];
            if let Some(x) = (0..k).rev().find(|x| s[*x] != c) {
                let d = k - x;
                if d <= t && d % 2 == t % 2 {
                    return true;
                }
            }
            if let Some(x) = (k..n).find(|x| s[*x] != c) {
                let d = x - k;
                if d <= t && d % 2 == t % 2 {
                    return true;
                }
            }
            return false;
        }
        for &k in [k - 1, k + 1].iter().filter(|x| **x < n) {
            let t = t - 1;
            let c = s[k];
            if (k > 0 && s[k - 1] == s[k]) || (k + 1 < n && s[k] == s[k + 1]) {
                let mut win = false;
                if let Some(x) = (0..k).rev().find(|x| s[*x] != c) {
                    let d = k - x;
                    if d <= t && d % 2 == t % 2 {
                        win = true;
                    }
                }
                if let Some(x) = (k..n).find(|x| s[*x] != c) {
                    let d = x - k;
                    if d <= t && d % 2 == t % 2 {
                        win = true;
                    }
                }
                if !win {
                    return true;
                }
            }
        }
        false
    })();
    let ans = if ans ^ (s[k] != b'A') { "Alice" } else { "Bob" };
    println!("{}", ans);
}

// ---------- begin input macro ----------
// reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
#[macro_export]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

#[macro_export]
macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

#[macro_export]
macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}
// ---------- end input macro ----------