#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main(){
	freopen("word.in","r",stdin);
	freopen("word.out","w",stdout);
	char s[200];
	scanf("%s",s);
	int num[30];
	memset(num,0,sizeof(num));
	for(int i=0;s[i];i++)
		num[s[i]-'a']++;
	int mm=0,mn=200;
	for(int i=0;i<26;i++){
		if(num[i]>mm)
			mm=num[i];
		if(num[i]<mn&&num[i])
			mn=num[i];
//		cout<<mm<<" "<<mn<<endl;
//		system("pause");
	}
	int ans=mm-mn;
	if(ans==0||ans==1){
		printf("No Answer\n0");
		return 0;
	}
	for(int i=2;i*i<=ans;i++)
		if(ans%i==0){
			printf("No Answer\n0");
			return 0;
		}
	printf("Lucky Word\n");
	printf("%d",ans);
	return 0;
}