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: Wrong Answer)

#include<stdio.h>
#include<string.h>
int main(void){
  char m[100];
  int i,j,l,cnt=0,flag;
  scanf("%s",m);
  l=strlen(m);
  for(i=0;i<l;i++){
    for(j=0;j<l;j++){
      if(m[i]==m[j]){
        cnt++;
      }
      if(cnt%2==1){
        flag=1;
      }else{
        flag=0;
      }
    }
  }
  if(flag==0){
    printf("Yes");
  }else{
    printf("No");
  }
  return 0;
}