def get_file(fn):
    with open(fn, 'r') as f:
        return list(map(lambda x: int(x), f.read().split(',')))

def xor_list(p, q):
    return list(map(lambda x: x[0] ^ x[1], zip(p * (len(q) // len(p) + 1), q)))

def decrypt():
    return sum(xor_list([103, 111, 100], get_file('../resource/cipher1.txt')))

print(decrypt())