#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cstring>
using namespace std;

const int maxn = 105;

int main()
{
    char str[maxn];
    int num[maxn];
    while(scanf("%s",str) != EOF)
    {
        int flag = 1;
        memset(num,0,sizeof(num));
        for(int i = 0;str[i] != '\0';i++)
        {
            int x = str[i] - 'a';
            num[x]++;
        }
        for(int i = 0;i < 26;i++)
        {
            if(num[i] % 2 != 0)
            {
                flag = 0;
                break;
            }
        }
        if(flag)
            printf("Yes\n");
        else
            printf("No\n");
    }
    return 0;
}