#include <stdio.h>
#include <stdlib.h>



int main()
{
    FILE *input;
    FILE *output;
    input = fopen("fractii.in", "r");
    output = fopen("fractii.out", "w");

    int number;
    int i, j;
    int numberFractions;

    fscanf(input, "%d", &number);


    numberFractions = number + number - 1;
    i = 1;

    while( i <= number)
    {
        j = 1;
        while(j <= number)
        {
            if(i > j && i % j != 0)

                {
                    printf("%d%d", i, j);
                    numberFractions++;

                }

              else
              {
                  if(i < j && j % i != 0)
                  {
                      printf("%d%d", i, j);
                      numberFractions++;

                  }
              }
            j++;

        }
        i++;
    }

    fprintf(output, "%d", numberFractions);


    return 0;
}