#include <iostream>
#include <fstream>
#include <cstring>
#include <cmath>
using namespace std;
int nprime(int numer, int denum) {
 int min, max;
 if(numer==denum) return 0;
 if(numer<denum) {min=numer; max=denum;}
 else {min=denum; max=numer;}
 int i=2;
 while (i<=min || i<=(sqrt(max)))
 {
  if(numer%i==0 && denum%i==0) { cout<<"num,den: "<<numer<<" "<<denum<<" not coprime\n"; return 0;}
  i++;
 }
 return 1;
}
int main(void)
{
 ifstream afile ("fractii.in");
 ofstream afile1 ("fractii.out");
 char ab[10];
 int num[15],sum=0, x=0;
 for (int i=0; i<10;i++){
  afile.getline(ab,10); 
  num[i]=atoi(ab); if(num[i]!=0) x++;}

 for(int no=0; no<x; no++)
 {sum=num[no]; cout<<"adding "<<num[no]<<" to the sum\n"; //num[no];
  if(num[no]%2==0) sum+=(num[no]/2)*(num[no]/2); 
  else sum+=((num[no]/2)+1)*(num[no]/2);
  for(int i=3; i<=num[no]; i+=2){
   {sum++;
    for(int j=2; j<=num[no];j++)
     if(nprime(i, j)==1) sum++;
   }
  }
 afile1<<sum<<endl;
 cout<<sum<<endl<<endl;}
 afile.close();
}