n twoArrays(k: i32, A: &[i32], B: &[i32]) -> String {
    const YES: &str = "YES";
    const NO: &str = "NO";

    let mut sorted_a: Vec<i32> = A.to_vec();
    let mut sorted_b: Vec<i32> = B.to_vec();

    sorted_a.sort();
    sorted_b.sort();

    for (a_element, b_element) in sorted_a.iter().zip(sorted_b.iter().rev()) {
        if !(a_element + b_element >= k) {
            return NO.to_string();
        }
    }

    YES.to_string()
}