Problem:
Score : 200 points

Problem Statement

Let w be a string consisting of lowercase letters.
We will call w beautiful if the following condition is satisfied:

Each lowercase letter of the English alphabet occurs even number of times in w.

You are given the string w. Determine if w is beautiful.

Constraints

1 \leq |w| \leq 100

w consists of lowercase letters (a-z).

Input

The input is given from Standard Input in the following format:

w

Output

Print Yes if w is beautiful. Print No otherwise.

Sample Input 1

abaccaba

Sample Output 1

Yes

a occurs four times, b occurs twice, c occurs twice and the other letters occur zero times.

Sample Input 2

hthth

Sample Output 2

No

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <bits/stdc++.h>

#define pb push_back
#define fst first
#define snd second
#define fill(a,c) memset(&a, c, sizeof(a))
#define fore(i,x,y) for(ll i=x;i<y;i++)
#define FIN ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)

typedef long long ll;
typedef unsigned long long ull;

using namespace std;

int main() {FIN;
   string s;cin>>s;
   string ans = "Yes";
   fore(i,0,s.length()){
        int c = 0;
        char cur = s[i];
        fore(j,0,s.length()){
            if(cur==s[j])c++;
        }
        if(c%2!=0){ans="No";break;}
   }cout<<ans<<"\n";
    return 0;
}