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

int prim(int, int);
int cmmdc(int ,int);

int main()
{
    FILE *fileIn = fopen("fractii.in", "r");
    FILE *fileOut;
    int n, numberOfFracts = 0, i, j;

    fscanf(fileIn, "%d", &n);
    fclose(fileIn);

    for (i=1; i<=n; i++)
    {
        for (j=1; j<=n; j++)
        {
            if (prim(i,j))
            {
                printf("%d/%d ", i, j);
                numberOfFracts++;
            }
        }
    }

    printf("\n%d fracts.\n", numberOfFracts);

    fileOut = fopen("fractii.out", "w");
    fprintf(fileOut, "%d", numberOfFracts);
    fclose(fileOut);

    return 0;
}

int prim(int a, int b)
{
    return (cmmdc(a,b) == 1);
}

int cmmdc(int a, int b)
{
    int r;
    while (b)
    {
        r = a % b;
        a = b;
        b = r;
    }
    return a;
}