from itertools import permutations
data = open(0).read().strip()

part_2 = False

people = set()
scores = {}
for line in data.splitlines():
    a, _, wl, score, _, _, _, _, _, _, b = line.split()
    b = b.replace(".", "")
    score = int(score)
    if wl == "lose":
        score = -score
    people.add(a)
    people.add(b)
    scores[(a, b)] = score
    if part_2:
        scores[(a, "me")] = 0
        scores[("me", a)] = 0
        scores[(b, "me")] = 0
        scores[("me", b)] = 0

if part_2:
    people.add("me")

max_score = 0
for p in permutations(list(people)):
    s = 0
    for i in range(len(p)):
        a, b = p[i], p[(i + 1) % len(p)]
        s += scores[(a, b)]
        s += scores[(b, a)]
    max_score = max(max_score, s)

print(max_score)