#import<bits/stdc++.h>
int n,a,b,c,d,r,p[]={2,3,5,7,11,13,17,19,23,29,31,37,41,43,47};main(){std::cin>>n;for(a=15;a--;)for(b=a;b--;)for(c=b;c--;)for(d=c;d--;)r+=p[a]*p[b]*p[c]*p[d]<=n;printf("%d\n",r);}