#include <iostream>
#include <fstream>
using namespace std;
ifstream in("fractii.in");
ofstream out("fractii.out");
int main()
{
    int n,i,j,cont=0,ok,d;
    in>>n;
    for(i=1;i<=n;i++)
    {
          for(j=1;j<=n;j++)
          {
                ok=0;
                for(d=2;d<=10;d++)
                {
                       if(i%d==0 && j%d==0)
                           ok++;
                }
                if(ok==0) cont++;


          }

    }
    out<<cont;
    return 0;
}