#include<bits/stdc++.h>
using namespace std;

void zs(int a){
	if(a==0 || a==1){
		cout<< "No Answer\n" << 0;
		return ;
	}
	for(int i = 2; i<=sqrt(a); i++){
		if(a%i==0){
			cout<< "No Answer\n" << 0;
			return ;
		}
	}
	cout<< "Lucky Word\n" << a;
}
int main(){
	string a;
	int maxx=0,minn=100,sum=1;
	cin>> a;
	for(int i = 0; i<=a.size(); i++){
		sum=1;
		for(int j = 0; j<=a.size(); j++){
			if(a[i]==a[j] && i!=j){
				sum++;
			}
		}
		maxx=max(maxx,sum);
		minn=min(minn,sum);
	}
	zs(maxx-minn);
	return 0;
}