#include<iostream>
using namespace std;
int main(){
	string word;
	int a[114514]={};
	cin>>word;
	for(int i=0;i<word.length();i++){
		a[word[i]-'a']++; 
	}
	int maxn=0,minn=114514;
	for(int i=0;i<26;i++){
		if(a[i]>maxn) maxn=a[i];
		if(a[i]<minn) minn=a[i];
	}
	int AK=maxn-minn;
	for(int i=2;i<=AK/2;i++){
		if(AK%i==0||AK==0){
			cout<<"No Answer\n0";
			return 0;
		}
	}
	cout<<"Lucky Word\n"<<AK;
	
	return 0;
}