22(id не с 1)

#https://inf-ege.sdamgia.ru/problem?id=48443
data = open('22 (4).csv').readlines()[1:]
n = len(data)
ids = {}
tt = [0] * n
prev = [[] for i in range(n)]
for i in range(n):
    ind, t, *args = data[i].split(';')[:-2]
    ind = int(ind)
    ids[ind] = i
    t = int(t)
    tt[i] = t
    for e in args:
        if e != '':
            x = ids[int(e.replace('"', ''))]
            prev[i].append(x)
answ = [0] * n
for i in range(n):
    answ[i] = tt[i]
    for lst in prev[i]:
        answ[i] = max(answ[i], answ[lst] + 3 + tt[i])
print(max(answ))