#30179: python 簡單的解答
A=[0,0]
B=[]
for a in input():
B.append(int(a))
for a in range(len(B)):
A[a%2]+=B[a]
print(abs(A[0]-A[1]))
A=[0,0]
B=[]
for a in input():
B.append(int(a))
for a in range(len(B)):
A[a%2]+=B[a]
print(abs(A[0]-A[1]))