#include<stdio.h>
int main()
{
    float rez[100],i,j;
    int k,ok,a=1,n;
    FILE *intrare,*iesire;
    iesire=fopen("fractii.out","w");
    intrare=fopen("fractii.in","r");
    fscanf(intrare,"%d",&n);
     rez[0]=1;
     for(i=1;i<=n;i++)
     {
                      for(j=1;j<=n;j++)
                      {
                                       ok=1;
                                       for(k=1;k<=a;k++)
                                        {              
                                                       
                                                        if(rez[k-1]==i/j)
                                                                    ok=0;
                                        }
                                       if(ok==1)
                                         {
                                                 rez[a]=i/j;
                                                 a++;                                        
                                         }
                                         
               
                       }
     }
    fprintf(iesire,"%d",a);
    fclose(iesire);
    fclose(intrare);
    return 0;
}