def fan(a):
    b = ""
    for i in a:
        if (i == "1"):
            b += "0"
        elif (i == "0"):
            b += "1"
    return b


a, b = input().split()
for i in range(4 - len(fan(a))):
    print("0", end="")
print(fan(a))
for i in range(4 - len(fan(b))):
    print("0", end="")
print(fan(b))
for i in range(4 - len(bin(int(a, 2) & int(b, 2))[2:])):
    print("0", end="")
print(bin(int(a, 2) & int(b, 2))[2:])
for i in range(4 - len(bin(int(a, 2) | int(b, 2))[2:])):
    print("0", end="")
print(bin(int(a, 2) | int(b, 2))[2:])
for i in range(4 - len(bin(int(a, 2) ^ int(b, 2))[2:])):
    print("0", end="")
print(bin(int(a, 2) ^ int(b, 2))[2:])

#code by Luthics