#include <iostream>
#include <cstdio>

using namespace std;

int main()
{
	string s;
	cin >> s;
	int n = s.length();
	int up = 1, low = 1;
	for(int i = 0; i < n; i++)
	{
		int k = 1;
		char ch = s[i];
		for(int j = i + 1; j < n; j++)
		{
			if(s[i] == s[j]) k++;
			if(k > up) up = k;
			if(k < low) low = k;
		}
	}
	
	int sub = up - low;
	int sum = 0;
	for(int i = 2; i < sub; i++)
	if(sub % i == 0) sum++;
	
	if(sum == 0 && sub != 0) cout << "Lucky Word" << endl;
	if(sum != 0) cout << "No Answer" << endl;
	cout << sub;
	return 0;
}