#include <fstream>
#include<iostream>
using namespace std;
int main()
{
    ifstream in;in.open("fractii.in");
    ofstream ou;ou.open("fractii.out",ofstream::out);
    int n,flag,v[100001],i,j,m,c;
    in>>n;flag=0;v[1]=2;v[2]=3;
    for(i=3;i<=n;i++)
        v[i]=v[i-1]+2;
    for(i=1;i<=n;i++)
    for(j=1;j<=n;j++)
    {
        c=1;
        for(m=1;m<=n;m++)
            if(j%v[m]==0 && i%v[m]==0){m=n;c=0;}
        if(c==1)flag=flag+1;
    }

    ou<<flag;
    in.close();ou.close();
    return 0;
}