#include<bits/stdc++.h>
using namespace std;
int a,zf[26];
void zs(int k)
{
	for(int j=3;j*j<=k;j+=2)
    {
        if(k%j==0)
        	cout<<"No Answer"<<endl<<0;
    }
    cout<<"Lucky Word"<<endl<<k;
}
int main()
{
	
	while(cin>>a)
		zf[(int)a-97]+=1;
	sort(zf+1,zf+26);
	zs(zf[26]-zf[1]);
	
}