#include<bits/stdc++.h>
using namespace std;
int maxn=-1,minn=101,la,n,nn;
string a,b,b1;
int zs(int xx)
{
	if(xx%2==0&&xx!=2) return 0;
	for(int ii=1;ii<sqrt(xx);ii+=2)
		if(xx%ii==0) return 0;
	return 1;
}
int mian()
{
	cin>>a;
	b1=a;
	la=a.length();
	for(int i=0;i<la;i++)
	{
		b=b1.substr(0,1);
		n=0;
		for(int j=0;j<la;j++)
		{
			if(b==a[j]) n++;
			if(maxn<n) maxn=n;
			if(minn>n) minn=n;
		}
	} 
	nn=maxn-minn;
	if(zs(nn)) printf("Luck Word\n%d",nn);
	else printf("No Answer\n0"); 
	return 0;
}