pizdec dolgo delal 16

def f(n):
    if n<2: return 1
    if n >= 2 and n%3 == 0: return f(n/3)+1
    if n >= 2 and n%3!=0: return f(n-2)+5

k = 0
for i in range(1, 100000):
    if f(i) == 55:
        k = k+1
print(k)