use proconio::input;

fn main() {
    input!{
        w: String,
    };

    let mut counts = [0; 26];
    for c in w.chars() {
        let i = c.to_digit(36).unwrap();
        counts[(i - 10) as usize] += 1;
    }

    for count in counts.iter() {
        if count % 2 != 0 {
            println!("No");
            return;
        }
    }

    println!("Yes");
}