str1 = input()
num = {}
for i in set(str1):
num[i]=str1.count(i)
max_value = max(num.values())
n=abs(2*max_value-len(str1))
print(n)
str1 = input()
num = {}
for i in set(str1):
num[i]=str1.count(i)
max_value = max(num.values())
n=abs(2*max_value-len(str1))
print(n)
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