#include <iostream>
#include <cmath>
#include <fstream>
using namespace std;

int main()
{
    ifstream Fin("DATA2.txt");
    ofstream Fout("OUT2.txt");
    for( int z = 0; z < 5; z++ )
    {
    
    
    int nSquare;
    
    Fin>>nSquare;
    
    int i, j;
    int count = 0;
    for( i = nSquare; i!=0; i-- )
    {
         for( j=1; j!=i; j++ )
         {
              if(i*j<=nSquare)
              {
                 count++;
              }
         }
    } 
    for( i = 1; i<=sqrt(nSquare); i++ )
    {
         count++;
    }
    
    Fout<<count<<endl;
    
    }
}