task3a.py

with open('task3a.txt') as f:
    lines = []
    for ele in f:
        lines.append(list(ele.strip('\n\r ')))

gamma = ''.join([ max(x, key=x.count) for x in zip(*lines) ])
epsilon = ''.join('1' if x == '0' else '0' for x in gamma)
power = int(gamma, 2) * int(epsilon,2)
print(power)