#include <stdio.h>
int main() {
char a[120], b;
int i, max = 0, min=120 , sum = 0, n, flag = 0;
gets(a);

for (b = 'a'; b <= 'z'; b++) {
for (i = 0; a[i] != '\0'; i++) {
if (a[i] == b)
sum++;
}
if (sum != 0) {
if (sum > max)
max = sum;
if (sum < min)
min = sum;
}
sum = 0;
}
n = max - min;
if(n<2)
printf("No Answer\n0");
else
{
for (i = 2; i < n; i++)
if (n % i == 0) {
flag = 1;
break;
}
if (flag == 0)
printf("Lucky Word\n%d", n);
else
printf("No Answer\n0");
}
return 0;
}