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 (GCC 5.4.1) (judge verdict: Accepted)

#include <stdio.h>
int main(void){
	int cnt[26]={0},i,f=1;
	char w[101];
	scanf("%s",w);
	for(i=0;w[i]!='\0';i++){
		cnt[w[i]-'a']++;
	}
	for(i=0;i<26;i++){
		if(cnt[i]%2){
			f=0;
			break;
		}
	}
	if(f) puts("Yes");
	else puts("No");
	return 0;
}