#include <iostream>
#include <fstream>
using namespace std;
int main ()
{
    int n,num,numi,cnumi,cnum,cnt = 0;;

    ifstream in("fractii.in");
    ofstream out("fractii.out");
    in>>n;
    for (num = 1; num <= n; num++)
    {
        for (numi = 1; numi<= n; numi++)
        {
            cnum = num;
            cnumi = numi;
            while (cnum != cnumi)
                if (cnum > cnumi) cnum -= cnumi;
                else cnumi -= cnum;
            if ( cnum == 1) cnt++;
        }
    }
    out<<cnt;
       return 0;

}