#include<iostream>
#include<algorithm>
using namespace std;
bool c(int x)
{
	if(x < 2) return false;
	for(int i = 2; i * i < x; i++)
	{
		if(x % i == 0)
		{
			return false;
		}
	}
	return true;
}
int a[30];
int main()
{
    string s;
    cin >> s;
    for(int i = 0; i < s.size(); i++)
    {
        a[s[i] - 'A']++;
    }
    int maxn = 0, minn = 2e9;
    for(int i = 1; i <= 26; i++)
    {
        maxn = max(maxn, a[i]);
        minn = min(minn, a[i]);
    }
    if(c(maxn - minn) == true)
    {
        cout << "Lucky Word" << endl;
        cout << maxn - minn << endl;
    }
    else
    {
        cout << "No Answer" << endl;
        cout << "0" << endl;
    }
    return 0;
}