```
#include <bits/stdc++.h>
using namespace std;
int cnt[26];
string s;
void t (int n)
{
for(int i = 0;i < s.size();i++)
{
if(s[i]=='a')
{
cnt[0]++;
}
if(s[i]=='b')
{
cnt[1]++;
}
if(s[i]=='c')
{
cnt[2]++;
}
if(s[i]=='d')
{
cnt[3]++;
}
if(s[i]=='e')
{
cnt[4]++;
}
if(s[i]=='f')
{
cnt[5]++;
}
if(s[i]=='g')
{
cnt[6]++;
}
if(s[i]=='h')
{
cnt[7]++;
}
if(s[i]=='i')
{
cnt[8]++;
}
if(s[i]=='j')
{
cnt[9]++;
}
if(s[i]=='k')
{
cnt[10]++;
}
if(s[i]=='l')
{
cnt[11]++;
}
if(s[i]=='m')
{
cnt[12]++;
}
if(s[i]=='n')
{
cnt[13]++;
}
if(s[i]=='o')
{
cnt[14]++;
}
if(s[i]=='p')
{
cnt[15]++;
}
if(s[i]=='q')
{
cnt[16]++;
}
if(s[i]=='r')
{
cnt[17]++;
}
if(s[i]=='s')
{
cnt[18]++;
}
if(s[i]=='t')
{
cnt[19]++;
}
if(s[i]=='u')
{
cnt[20]++;
}
if(s[i]=='v')
{
cnt[21]++;
}
if(s[i]=='w')
{
cnt[22]++;
}
if(s[i]=='x')
{
cnt[23]++;
}
if(s[i]=='y')
{
cnt[24]++;
}
if(s[i]=='z')
{
cnt[25]++;
}
}
}
int main()
{
cin >> s;
int max = -999999,min = 999999;
t(s.size());
for (int i = 0; i < 26; i++)
{
if(cnt[i] > max)
{
max = cnt[i];
}
if(cnt[i] < min && cnt[i] != 0)
{
min = cnt[i];
}
}
// cout << max << " " << min;
int ans = max - min;
if(ans == 1 || ans == 0)
{
cout << "No Answer" << endl << 0;
return 0;
}
for(int i=2;i<=sqrt(ans);i++)
{
if(ans % i == 0)
{
cout << "No Answer" << endl << 0;
return 0;
}
}
cout << "Lucky Word" << endl << ans;
return 0;
}
```
@[zc_lovely](/user/1272625)
by wuboyan714 @ 2024-02-23 11:07:13
@[zc_lovely](/user/1272625)
```cpp
for(int i=0;i<=1;i++) ans[a[i]-'a']++;
```
->
```cpp
for(int i=0;i<=l;i++) ans[a[i]-'a']++;
```
by xzy_caiji @ 2024-02-23 11:10:51
我写错了，是i<l
by xzy_caiji @ 2024-02-23 11:13:27
最后AC版：
```cpp
#include<bits/stdc++.h>
using namespace std;
char a[110];
int ans[26]={0};
int l,maxx,minn,delta;
int main()
{
scanf("%s",a);
l=strlen(a);
for(int i=0;i<l;i++) ans[a[i]-'a']++;
maxx=0;
minn=100000;
for(int i=0;i<=26;i++)
{
if(ans[i]>maxx) maxx=ans[i];
if(ans[i]!=0&&ans[i]<minn) minn=ans[i];
}delta=maxx-minn;
if(delta==0||delta==1)
{
printf("No Answer\n0\n");
return 0;
}
for(int i=2;i<=sqrt(delta);i++)
{
if(delta%i==0)
{
printf("No Answer\n0\n");
return 0;
}
}printf("Lucky Word\n%d\n",maxx-minn);
return 0;
}
```
by xzy_caiji @ 2024-02-23 11:14:43
@[zc_lovely](/user/1272625) 楼主对质数理解不够啊
by xzy_caiji @ 2024-02-23 11:15:41
@[zc_lovely](/user/1272625)
```cpp
#include<iostream>
#include<map>
#include<math.h>
#include<algorithm>
#include<string.h>
using namespace std;
map<char,int>m;
int main(){
int maxx=-999999,minn=999999;
char a[101];
cin>>a;
int l=strlen(a);
for(int i=0;i<l;i++){
m[a[i]]++;
maxx=max(maxx,m[a[i]]);
//minn=min(minn,m[a[i]]);
}
for(int i=0;i<l;i++){
minn=min(minn,m[a[i]]);
}
//cout<<maxx<<' '<<minn<<endl;
maxx-=minn;
// cout<<maxx<<endl;
if(maxx==0||maxx==1){
cout<<"No Answer"<<endl;
cout<<0;
return 0;
}
for(int i=2;i<=sqrt(maxx);i++){
if(maxx%i==0){
cout<<"No Answer"<<endl;
cout<<0;
return 0;
}
}
cout<<"Lucky Word"<<endl;
cout<<maxx;
return 0;
}
```
~~给个关注吧இ௰இ~~
by quxiangyu @ 2024-02-23 11:18:07
@[xzy_caiji](/user/939580) 谢谢大佬
by zc_lovely @ 2024-02-23 11:49:25
@[xzy_caiji](/user/939580) 关注给你了（再次感谢）
by zc_lovely @ 2024-02-23 11:51:28