#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int main()
{
	int maxn=0,minn=100;
	char a[105];
	scanf("%s",a);
	int n=strlen(a);
	int i,sum[105]={0},p;	
	for(i=0;i<n;i++)
	{
		sum[a[i]-'a']++;
		if(sum[a[i]-'a']>0 && sum[a[i]-'a']<minn)
			minn=sum[a[i]-'a'];
		else if(sum[a[i]-'a']>maxn)
			maxn=sum[a[i]-'a'];
	}
	p=maxn-minn;
	if(p%2!=0 || p==2)
	{
		printf("Lucky Word\n");
		printf("%d",p);
	}
	else 
	{
		printf("No Answer\n");
		printf("0");
	}
	return 0;
}