# coding: utf-8
# Your code here!
import itertools
x = int(input())
l = [3, 5, 7]

h = itertools.combinations_with_replacement(l, 4)

cnt = 0
for v in itertools.combinations_with_replacement(l, 4):
    if (3 in v and 5 in v and 7 in v):
        if v < x:
            cnt += 1

h_list = list(itertools.combinations_with_replacement(l, 4))

print (cnt)