#include<bits/stdc++.h>
using namespace std;

int maxn,minn=1e7;
int x;

string s1;

int a[1000];

void no()
{
    cout<<"No Answer\n"<<x;
}

void yes()
{
    cout<<"Lucky Word\n"<<x;
}

int main(){
    
    cin>>s1;
    
    for(int i=0;i<s1.length();i++)
    {
        a[int(s1[i]-'a')]+=1;
        maxn=max(a[int(s1[i]-'a')],maxn);
        minn=min(a[int(s1[i]-'a')],minn);
    }
    
    x=maxn-minn;
    
    if(x<2)no();
    else if(x==2 || x==3)yes();
    else
    {
        for(int i=2;i*i<=x;i++)
            if(x%i==0)
                no();
                return 0;
        yes();
    }
    
    return 0;
}