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: Runtime Error)

import java.util.*;
public class Main {
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		String a = s.next();
		char[] ar = a.toCharArray();
		loop: for (int i = 0;i < ar.length;i++) {
			int y = 0;
			for (int m = 0;m < ar.length;m++) {
				if(ar[i] == ar[m]) {
					y += 1;
				}
				if(ar[m] == ar[ar.length]) {
					if(y % 2 == 1) {
						System.out.println("No");
						break loop;
					}
				}
			}
		}
		System.out.println("Yes");
	}
}