from collections import deque

my_input = open("inputs/input_4", "r").read().split("\n")
start = "STT"


class City:
    def __init__(self, name):
        self.name = name
        self.connects = set()

cities = {}
for line in my_input:
    city_left, city_right = line.split(" <-> ")
    if city_left not in cities:
        cities[city_left] = City(city_left)
    if city_right not in cities:
        cities[city_right] = City(city_right)

    cities[city_left].connects.add(cities[city_right])
    cities[city_right].connects.add(cities[city_left])

p1 = len(cities)
p2 = 0
p3 = 0
q = deque([(0, cities[start])])
seen = set()
while q:
    dist, city = q.popleft()
    if city in seen:
        continue
    seen.add(city)

    p3 += dist
    if dist <= 3:
        p2 += 1

    for sub_city in city.connects:
        q.append((dist + 1, sub_city))

print(p1)
print(p2)
print(p3)