import sys
input=lambda: sys.stdin.readline().rstrip()
F=[3, 5, 17, 257, 65537]
a=int(input())
FF=[1]
for i in range(2**5):
  res=1
  for j in range(5):
    if i&(1<<j):
      res*=F[j]
  if res>1:
    FF.append(res)
S=set()
for ff in FF:
  if ff==1:
      ord=1
  else:
    ord=0
  while 2<=ff*2**ord<=10**9:
    S.add(ff*2**ord)
    ord+=1
S=sorted(list(S))
import bisect
ct=bisect.bisect_right(S,a)
print(ct-1)