#include<bits/stdc++.h>
using namespace std;
int b[130];
bool ss(int n){
	if(n==1||n==0) return 0;
	for(int i=2;i<=sqrt(n);i++)
		if(n%i==0) return 0;
	return 1;
}
int main(){
	int maxnum=INT_MIN,minnum=INT_MAX;string a;
	cin>>a;
	for(int i=0;i<a.size();i++){
		b[int(a[i])]++;
		if(b[int(a[i])]>maxnum) maxnum=b[int(a[i])];
		if(b[int(a[i])]<minnum) minnum=b[int(a[i])];
	}
	if(ss(maxnum-minnum)) cout<<"Lucky Word"<<endl<<maxnum-minnum;
	else cout<<"No Answer"<<endl<<0;
	return 0;
}