def sushu(n): fac=[] if n==1: return else: for i in range(2,n): if n%i==0: fac.append(i) if not fac: return n else: return s=input() arr=[] for i in s: arr.append(s.count(i)) arr.sort() num=arr[-1]-arr[0] if sushu(num): print('Lucky Word') print(num) else: print('No Answer') print(0)