from pathlib import Path

data = [(int(x) if len(x) > 0 else x) for x in Path("data/01.txt").read_text().split("\n")]
x = 0
r = []
for n in data:
    if n == '':
        if x:
            r.append(x)
            x = 0
        r.append(n)
    else:
        x += n

r=list(set(r))
r.remove('')
max(r)