Hello. Task number is 2023.
Timus flatly refuses to accept. He had a lot of tests, but he did not find any flaws. Maybe someone will tell me, otherwise I'll kill myself tomorrow.

n = int(input())
zn = [1]
k=0
y = 0
sh1 = ('Alice', 'Ariel', 'Aurora', 'Phil', 'Peter', 'Olaf', 'Phoebus', 'Ralf', 'Robin')
sh2 = ('Bambi', 'Belle', 'Bolt', 'Mulan', 'Mowgli', 'Mickey', 'Silver', 'Simba', 'Stitch')
for j in range (n):
    i = input()
    if i in sh1:
        zn.append (1)
    elif i in sh2:
        zn.append (2)
    else:
        zn.append (3)
    n-=1
for k in range (len(zn)):
    y+= abs ((int(zn [k-1]))-int(zn [k]))
lop = y-zn[-1]+1
print (lop)