#include <iostream>
#include <vector>
#include <string>

int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    // Skip the first input as per the provided code logic
    std::string line;
    std::getline(std::cin, line);

    long x = 0, value;
    while (std::cin >> value) {
        x ^= value;
    }

    std::cout << (x ? "Alice" : "Bob") << std::endl;
    return 0;
}