#include <stdio.h>

typedef enum { false, true} Boolean;

int main()
{
    Boolean ds[10] = {false};
    int d;
    long int n;
    int ok = true;

    printf("Enter a number: ");
    scanf("%ld", &n);

    while (n > 0 && ok)
    {
        d = n % 10;
        if (!ds[d])
        {
            ds[d] = true;
        }
        else
        {
            ok = false;
        }
        n = n / 10;

    }

    if (ok)
    {
        printf("Looks Good\n\n");
    }
    else
    {
        printf("Fails\n\n");
    }

    return 0;
}