#include<bits/stdc++.h>
using namespace std;
int a[256];
bool js(int x)
{
	int i = 2;
	if(x <= 1) return 0;
	else while(i <= sqrt(x) && x % i != 0) i ++;
	return i > sqrt(x);
}
int main()
{
	string s;
	cin >> s;
	for(int i = 0; i < s.size(); i ++)
		a[s[i]] ++;
	sort(a + 1, a + s.size() + 1);
	int maxx = 0, minn = 105;
	for(int i = 97; i <= 122; i ++)
		maxx = max(maxx, a[i]), minn = min(minn, a[i]);
	int b = maxx - minn;
	if(js(b))
		cout << "Lucky Word\n" << b;
	else
		cout << "No Answer\n" << 0;
	return 0;
}