#include<cstdio>
#include<cstring>
#include<iostream>
#include<string>
#include<algorithm>
using namespace std;
char a[101];
int l,hehe[26],c,b;
int ss(int x)
{
	if(x==1||x==0) return 0;
	for(int i=2;i*i<=x;i++)
	{
		if(x%i==0) return 0;
	}
	return 1;
}
int main()
{
	freopen("word.in","r",stdin);
	freopen("word.out","w",stdout);
	cin>>a;
	l=strlen(a);
	for(int i=0;i<=l-1;i++)
	{
		if(a[i]==97) hehe[0]++;
		if(a[i]==98) hehe[1]++;
		if(a[i]==99) hehe[2]++;
		if(a[i]==100) hehe[3]++;
		if(a[i]==101) hehe[4]++;
		if(a[i]==102) hehe[5]++;
		if(a[i]==103) hehe[6]++;
		if(a[i]==104) hehe[7]++;
		if(a[i]==105) hehe[8]++;
		if(a[i]==106) hehe[9]++;
		if(a[i]==107) hehe[10]++;
		if(a[i]==108) hehe[11]++;
		if(a[i]==109) hehe[12]++;
		if(a[i]==110) hehe[13]++;
		if(a[i]==111) hehe[14]++;
		if(a[i]==112) hehe[15]++;
		if(a[i]==113) hehe[16]++;
		if(a[i]==114) hehe[17]++;
		if(a[i]==115) hehe[18]++;
		if(a[i]==116) hehe[19]++;
		if(a[i]==117) hehe[20]++;
		if(a[i]==118) hehe[21]++;
		if(a[i]==119) hehe[22]++;
		if(a[i]==120) hehe[23]++;
		if(a[i]==123) hehe[24]++;
		if(a[i]==124) hehe[25]++;
	}
	sort(hehe+0,hehe+26);
	for(int i=0;i<=25;i++)
	{
		if(hehe[i]!=0)
		{
			b=hehe[i];
			break;
		}
	}
	c=hehe[25]-b;
	if(ss(c)==1)
	{
		cout<<"Lucky Word"<<endl;
		cout<<c;
	}
	else
	cout<<"No Answer"<<endl<<0;
	fclose(stdin);
	fclose(stdout);
	return 0;
}