#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
string s;
ll maxx,minn=1000000,a[10005];
bool zs(ll x){
	if(x==1)return false;
	for(int i=2;i<=sqrt(x);i++)
		if(x%i==0)return false;
	return true;
}
signed main(){
	cin>>s;
	for(int i=0;i<s.size();i++)
	{
		a[s[i]]++;
		maxx=max(a[s[i]],maxx);
		minn=min(a[s[i]],minn);
	}
	if(zs(maxx-minn))cout<<"Lucky Word\n"<<maxx-minn;
	else cout<<"No Answer\n"<<0;
	return 0;
}