rt

#define I return
#define disAK 0
#define IOI ;
#include"bits/stdc++.h"
using namespace std;
int a[27],m;
bool cmp(int x,int y){
	return x>y;
}
int main(){
	string s;
	cin>>s;
	for(int i=0;i<s.size();i++)a[s[i]-'a']++;
	sort(a+0,a+28,cmp);
	for(int i=0;i<27;i++){
		if(a[i]==0){
			m=a[i-1];
			break;
		}
	}
	bool c=1;
	int p=a[0]-m;
	for(int i=2;i*i<=p;i++)if(p%i==0){
		c=0;
		break;
	}
	if(c&&p){
		cout<<"Lucky Word\n"<<p;
	}else{
		cout<<"No Answer\n0";
	}
	I disAK IOI
}
//Let me AC, please, I'll do anything.