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

int main()
{
    printf("AAAAAAAAAA");
    int n, i, j, contor;

    FILE *input;
    FILE *output;

    input = fopen("fractii.in", "r");
    output = fopen("fractii.out", "w");

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

    contor = 0;
    for(i = 1 ; i <= n; i++){
        for(j = 1; j <= n; j++){
            if(i % j != 0 && j % i != 0)
                contor++;
            if(i % j == 0)
                while(i % j == 0 && i != 0)
                    i = i / j;
            if(j % i == 0)
                while(j % i == 0 && j != 0)
                    j = j / i;
        }
    }
    fprintf(output, "%d", contor);
    return 0;
}