import java.util.Scanner;

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

		String w = sc.next();
		int count = 1;
		int i = 0;
		while (w.length() >= 2) {
			for (int j = i + 1; j < w.length(); j++) {
				if (w.substring(i, 1).equals(w.substring(j, j + 1))) {
					count++;
				}
			}
			if (count % 2 == 1) {
				System.out.println("No");
				break;
			}
			count = 1;
			w = w.replaceAll(w.substring(0, 1), "");
		}
		if (w.length() == 0) {
			System.out.println("Yes");
		} else if (w.length() == 1) {
			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