#37848: py五行解
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(周孝倫)
s = input()
a = sum((ord(s[i]) - 48) * (-1) ** i for i in range(len(s)))
print(abs(a))
s = input()
a = sum((ord(s[i]) - 48) * (-1) ** i for i in range(len(s)))
print(abs(a))