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.
#ABC044B
n=input()
a=[]
for i in range(len(n)):
     a.append(n[i])
sum_=0
for i2 in range(len(a)):
    sum_=sum_+a.count(a[i2])%2

if sum_ == 0:
    print("YES")
else:
    print("NO")
#ABC044B
n=input()
a=[]
for i in range(len(n)):
     a.append(n[i])
sum_=0
for i2 in range(len(a)):
    sum_=sum_+a.count(a[i2])%2

if sum_ == 0:
    print("Yes")
else:
    print("No")