with open("input.txt") as f:
    lines = [i.strip() for i in f.readlines()]


def count_digits(ar):
    zeros = [0] * len(ar[0])
    ones = [0] * len(ar[0])

    for row in ar:
        for pos, c in enumerate(row.strip()):
            (zeros if c == "0" else ones)[pos] += 1

    return zeros, ones


zeros, ones = count_digits(lines)


print(zeros)
print(ones)

# lol
gamma_bits = []
epsi_bits = []

for pos, zero in enumerate(zeros):
    gamma_bits.append("1" if zero < ones[pos] else "0")
    epsi_bits.append("1" if zero > ones[pos] else "0")

gamma = int("".join(gamma_bits), 2)
epsi = int("".join(epsi_bits), 2)

print(gamma * epsi)