import math
import sys
from typing import List, Tuple

int1 = lambda x: int(x) - 1
input = lambda: sys.stdin.readline().rstrip('\n')
ii = lambda: int(input())
vi = lambda: list(map(int, input().split()))
vi1 = lambda: list(map(int1, input().split()))


def dbg(*args, **kwargs):
    print(*(repr(arg) for arg in args), *(f'{k}: {repr(v)}' for k, v in kwargs.items()),
          sep='; ', file=sys.stderr, flush=True)


def main():
    def pr(a, b):
        return [i * j for i in a for j in b]

    z = list(1 << i for i in range(31))
    z = pr(z, [1, 3])
    z = pr(z, [1, 5])
    z = pr(z, [1, 17])
    z = pr(z, [1, 257])
    z = pr(z, [1, 65537])
    z = sorted(set(z))
    n = ii()

    return sum(3 <= i <= n for i in z)


def _start():
    if (ret := main()) is not None:
        print(*ret) if isinstance(ret, List) or isinstance(ret, Tuple) else print(ret)


if __name__ == '__main__':
    _start()