#include<bits/stdc++.h>
using namespace std;
string a;
int main(){
	int maxn=0,b,minn=9999999,c,x=0;
	cin>>a;
	for(int i=0;a[i]!='\0';i++)
	{
		b=0;
		for(int j=0;a[j]!='\0';j++)
		{
			if(a[i]==a[j])
			b++;
		}
		maxn=max(maxn,b);
		minn=min(minn,b);
	}
	c=maxn-minn;
	if(c==2)
	x=0;
	if(c==0)
	x=1;
	for(int i=2;i*i<=c;i++)
	{
		if(c%i==0)
		{
			x=0;
			break;
		}
	}
	if(x==0)
	cout<<"Lucky Word"<<endl<<c;
	else 
	cout<<"No Answer"<<endl<<c;
	return 0;
}