#include<algorithm>
bool Prime(int num)
{
	if(num<2)
	{
		return false;
	}
	for(int i=2;i<num;i++)
	{
		if(num%i==0)
		{
			return false;
		}
	}
	return true;
}
using namespace std;
int MaxMin(string s)
{
	int max=0,minn=101;
	for(int i=0;i<s.size();i++)
	{
	 int cnt =count(s.begin(),s.end(),s[i]);
	 if(cnt>max)
	 {
	 	max=cnt;
	 }
	 if(cnt<minn)
	 {
	 	minn=cnt;
	 }
	}
	return max-minn;
 } 
int main()
{
	string str;
	cin>>str;
	int difference =MaxMin(str);
	if(Prime(difference)==true) 
	{
		cout<<"Lucky Word"<<endl<<difference;
	}
	else
	{
		cout<<"No Answer"<<endl<<"0";
	}
	return 0;
	
}

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