...

#include<bits/stdc++.h>
using namespace std;
int t[30];
int sushu(int n){
if(n <= 1) return false;
for(int i = 2;i < n;i++){
if(n % i == 0) return false;
}
return true;
}
int main(){
string a;
cin >> a;
for(int i = 0;i < a.size();i++){
t[a[i]-96];
}
int minn = 105 , maxn = 0;
for(int i = 1;i <= 26;i){
if(minn > t[i] && t[i] != 0) minn = t[i];
if(maxn < t[i]) maxn = t[i];
}
if(sushu(maxn - minn)) cout << "Lucky Word" << endl << maxn - minn;
else cout << "No Answer" << endl << 0;
return 0;
}