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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		String s = sc.next();

		while (!s.equals("")) {
			Character c = s.charAt(0);
			int count = 0;
			for (int i = 0; i < s.length(); i++) {
				if (s.charAt(i) == c.charValue()) {
					count++;
				}
			}
			if (count % 2 == 1) {
				System.out.println("No");
				sc.close();
				return;
			}
			s = s.replaceAll(c.toString(), "");
		}

		System.out.println("Yes");
		sc.close();
	}
}