#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++)
#define ALL(x) (x).begin(), (x).end()

const double PI = acos(-1);

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  vector<long long> v = {3, 5, 17, 257, 65537};
  vector<long long> xs;

  REP (mask, 1<<5) {
    long long x = 1;
    REP (i, 5) {
      if (mask & 1 << i)
        x *= v[i];
    }
    xs.push_back(x);
  }

  long long a;
  cin >> a;
  int ret = 0;
  for (long long x: xs) {
    while (x <= a) {
      if (x >= 3)
        ++ret;
      x *= 2;
    }
  }
  cout << ret << endl;

  return 0;
}