#include<bits/stdc++.h> using namespace std; typedef long long ll; ll a[5]={0,2,5,11,13}; int main() { ll n; while(cin>>n) { ll ans=n; for(int i=1,cnt=0;i<16;++i,cnt=0) { int tot=i,j=0; ll tmp=1; while(tot) { ++j; if(tot&1) { ++cnt; tmp*=a[j]; } tot>>=1; } if(cnt&1) ans-=n/tmp; else ans+=n/tmp; } cout<<ans<<endl; } }