#include<bits/stdc++.h>
using namespace std;
int a[26];
int main()
{
	string s;
	cin>>s;
	int maxn=-1,minn=2e5;
	for(int i=0,len=s.size();i<len;i++)
	{
	a[s[i]]++;
	if(a[s[i]]>maxn)maxn=a[s[i]];
	if(a[s[i]]<minn)minn=a[s[i]];
    }
    int n=maxn-minn;
    if(n!=2&&n!=3&&n!=5&&n!=7&&n!=11&&n!=13&&n!=17&&n!=19&&n!=23&&n!=29&&n!=31&&n!=37&&n!=41&&n!=43&&n!=47&&n!=53&&n!=59&&n!=61&&n!=67&&n!=71&&n!=73&&n!=79&&n!=83&&n!=89&&n!=97)cout<<"No Answer"<<endl<<0;
    else cout<<"Lucky Word"<<endl<<n;
	return 0;
}