#include <cstdio>
char buffer[100];
int cnt[127],maxn,minn;
int main()
{
    fread(buffer,1,100,stdin);
    for(char* ptr=buffer; ptr-buffer<100; ptr++)
        cnt[*ptr]++;
    maxn=0,minn=0x3f3f3f3f;
    for(char i='a'; i<='z'; i++) if(cnt[i])
        {
            if(cnt[i]>maxn) maxn=cnt[i];
            if(cnt[i]<minn) minn=cnt[i];
        }
    bool flag=(maxn-minn>1);
    for(int i=2; i<maxn-minn&&flag; i++) flag=((maxn-minn)%i!=0);
    if(flag)
    {
        puts("Lucky Word");
        printf("%d",maxn-minn);
    }
    else
    {
        puts("No Answer");
        putchar('0');
    }
    return 0;
}