#include<iostream>
#include<cstring>
#include<cstdio>
using namespace std;
int main(){
	char a[110];
	int ans[26] = {0};
	int l, mmax, mmin, delta;
	scanf ("%s", a);
	l = strlen (a);
	for (int i = 0; i < l; i++)
		ans[a[i] - 'a']++;
	mmax = 0; mmin = 10000;
	for (int i = 0; i < 26; i++) {
	if (ans[i] > mmax) mmax = ans[i];
	if (ans[i] != 0 && ans[i] < mmin)
		mmin = ans[i];
	}
	delta = mmax - mmin;
	if(delta == 1 || delta == 0){
		printf("No Answer\n0\n");
		return 0;
	}
	for(int i = 2;i * i <= delta;i++){
		printf("No Answer\n0\n");
		return 0;
	}
	printf("Lucky Word\n");
	printf("%d\n", mmax-mmin);
    return 0;
}