P1125 [NOIP2008 提高组] 笨小猴

#include<bits/stdc++.h>
using namespace std;
char a[1005];
int n,w,d,x=1000000;
int p[25]={2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97};
int main(){

	cin>>a;
	n=strlen(a);
	for(int i=0;i<n;i++){
		for(int j=i;j<n;j++){
			if(a[i]==a[j])w++;
		}
		d=max(d,w);
		x=min(x,w);
		w=0;
	}
	d-=x;
	for(int i=0;i<25;i++){
		if(d==p[i]){
			cout<<"Lucky Word"<<endl<<d;
			return 0;
		}
	}
	cout<<"No Answer"<<endl<<0;
	
	return 0;
}