#include<bits/stdc++.h>
using namespace std;
signed main(){
 string a;
  int c=1,b[100000]={};
  cin>>a;
  for(int i=0;i<a.size();i++){
    b[a[i]]++;
  }
  for(int i=0;i<1000;i++){
    if(b[i]%2==1) c=0;
  }
  if(c) cout<<"Yes";
  else cout<<"No";
  cout<<"\n";
}