#include<bits/stdc++.h>
using namespace std;
int a[27];
int main()
{
	freopen("word.in","r",stdin);
	freopen("word.out","r",stdout);
	string s;
	cin>>s;
	for(int i=0;i<=s.length()-1;i++)
	{
		a[s[i]-96]++;
	}
	int maxn=0,minn=101;
	for(int i=0;i<=s.length()-1;i++)
	{
		if(a[s[i]-96]>maxn)
		    maxn=a[s[i]-96];
		if(a[s[i]-96]<minn)
		    minn=a[s[i]-96];
	}
	int n=maxn-minn;
	for(int i=2;i<=sqrt(n);i++)
	{
		if(n%i==0)
		{
			cout<<"No Answer"<<endl;
			cout<<"0";
			return 0;
		}
	}
	if(n==1||n==0)
	{
		cout<<"No Answer"<<endl;
		cout<<"0";
		return 0;
	}
	cout<<"Lucky Word"<<endl;
	cout<<n;
	return 0; 
}