import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

public class Main {
  public static void main(String[] args) throws IOException {
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    String str = in.readLine();
    String[] w = str.split("");
    int[] cnt = new int[100];
    boolean flg = true;
    for(int i=0; i<str.length(); i++) {
      cnt[(int)w[i].charAt(0)-97]++;
    }
    
    for(int i=0; i<100; i++) {
      if(cnt[i]%2!=0) {
        System.out.println("No");
        flg = false;
        break;
      }
    }
    if(flg==true)
      System.out.println("Yes");
  }
}
/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