#include <stdio.h>
#include <string.h>
int main()
{
char arr[100];
scanf("%s", &arr);
int max, s, a;
int min = 100;
int count = 0;
for (int i = 0; i < strlen(arr); i++)
{
count = 0;
for (int j = i; j < strlen(arr); j++)
{
//判断一样的有多少个
if (arr[i] == arr[j] && arr[j - 1] != arr[i])
{
count++;
}
}
//判断大小
if (count > max)
max = count;
else
min = count;
}
//最大值减最小值
s = max - min;
//判断是不是素数也称质数
for (int i = 2; i < s; i++)
{
a = 1;
if (s % i == 0)
{
a = 0;
break;
}
}
if (a == 1 && s != 1)
printf("Lucky Word\n%d\n",s);
else
printf("No Answer\n0\n");
return 0;
}