import java.util.*;

public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String w = sc.next();
		char c = w.charAt(0);
		int cc = 0;
		for(int i = 0 ; i < w.length() ; i++){
			if(c == w.charAt(i)){
				cc++;
			}
			String a = c + "";
			if(i == w.length() - 1){
				w = w.replaceAll(a , "");
				if(cc % 2 != 0){
					System.out.println("No");
					break;
				}
				if(w.length() != 0){
					c = w.charAt(0);
					cc = 1;
					i = 0;
				} else if(w.length() == 0){
					System.out.println("Yes");
					break;
				}
			}
		}
		sc.close();
	}
}

/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