#include<bits/stdc++.h> using namespace std; int a[26]; int main(){ int le=0,c=0,maxn=0,minn=110; string s; cin>>s; le=s.size(); for(int i=0;i<=le-1;i++){ c=s[i]; c[a-97]++; } int zhishu[26]={2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97}; for(int i=0;i<=25;i++){ if(a[i]<minn&&a[i]!=0)minn=a[i]; } for(int i=0;i<=25;i++){ if(a[i]>maxn)maxn=a[i]; } int cha=maxn-minn; for(int i=0;i<=24;i++){ if(cha==zhishu[i]){ cout<<"Lucky Word"<<endl; cout<<cha; return 0; } } cout<<"No Answer"<<endl; cout<<"0"; return 0; }