fn main() {
    println!("{}", equalize(vec![3, 3, 2, 1, 3])); // 2
    println!("{}", equalize(vec![1, 2, 5, 4, 6, 3])); // 5
}

fn equalize(list: Vec<i32>) -> u32 {
    // Get the maximum occurring element
    let max_ele = match list
        .iter()
        .max_by_key(|&x| list.iter().filter(|&a| a == x).count())
    {
        Some(e) => e,
        None => return (list.len() - 1) as u32,
    };
    // Filter out the remaining and count
    list.iter().filter(|&x| x != max_ele).count() as u32
}