import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String txt = scan.nextLine();

        HashMap<Character, Boolean> hash = new HashMap<Character, Boolean>();

        for (int i=0; i < txt.length(); i++) {
            if (hash.containsKey(txt.charAt(i))) {
                hash.remove(txt.charAt(i));
            } else {
                hash.put(txt.charAt(i), true);
            }
        }

        if (hash.size() == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz