#include<bits/stdc++.h>
using namespace std;
int a[26],maxx=-114514,minn=114514;
char z[100005];
bool flg=0;
int main(){
	scanf("%s",&z);
	int i=0;
	while(z[i]!='\0'){
		a[z[i]-'a']++;
		i++;
	}
	for(int j=0;j<=26;j++) maxx=max(maxx,a[j]),minn=min(minn,a[j]);
	maxx-=minn;
	for(int i=2;i<=sqrt(maxx);i++) if(maxx%i==0)flg=1;
	if(flg) printf("No Answer\n%d",maxx);
	else printf("Lucky Word\n%d",maxx);
	return 0;
}