#include<bits/stdc++.h>
using namespace std;
int w[26]={0};
int main(){
	freopen("word.in","r",stdin);
	freopen("word.out","w",stdout);
	string s;
	cin>>s;
	for(int i=0;i<s.length();i++){
		w[s[i]-'a']++;
	}
	sort(w,w+26);
	register int f;
	for(int i=0;i<26;i++)
		if(w[i]!=0){
			f=i;
			break;
		}
	register int t=w[25]-w[f];
	if(t%2==0&&t!=2||t==1){
		cout<<"No Answer"<<endl<<0;
		return 0;
	}
	for(int i=3;i<t;i++){
		if(t%i==0){
			cout<<"No Answer"<<endl<<0;
			return 0;
		}
	}
	cout<<"Lucky Word"<<endl<<t;
	return 0;
}