#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <string>
#include <vector>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
using namespace std;

int main()
{
    int n;
    cin >> n;

    vector<int> v = {3, 5, 17, 257, 65537};
    int ans = -2;
    for(int i=0; i<(1<<5); ++i){
        long long a = 1;
        bitset<5> bs(i);
        for(int j=0; j<5; ++j){
            if(bs[j])
                a *= v[j];
        }
        while(a <= n){
            ++ ans;
            a *= 2;
        }
    }
    cout << ans << endl;

    return 0;
}