#include<bits/stdc++.h>
using namespace std;
string s;
int maxn=-1,minn=200,ans,a[105];
int main()
{
	getline(cin,s);
	for(int i=0;i<s.size();i++) a[s[i]-'a']++;
	for(int i=0;i<26;i++){
		if(a[i]>maxn) maxn=a[i];
		if(a[i]>0&&a[i]<minn) minn=a[i];
	}
	ans=maxn-minn;
	for(int i=2;i<ans;i++)
		if(ans%i==0) {
			cout<<"No Answer"<<ans;
			return 0;
		}
		
	cout<<"Lucky Word"<<endl<<ans;

	return 0;
}