90分求助

#include <bits/stdc++.h>
using namespace std;
int prm(int tmp){
	if (tmp==0||tmp==1) return 0;
	for (int i=2;tmp%2!=0&&i*i<tmp;i%2==0?i++:i+=2)
		if (tmp%i==0) return 0;
	return 1;
}
int main(){
	string wd, md;
	int ans=0, minn=1000000, maxn=-100,tmp;
	bool sum[105]={};
	getline (cin,wd);
	for (int i=0;i<wd.size();i++){
		ans=1;
		if (sum[i]) continue;
		for (int j=i+1;j<wd.size();j++){
			if (wd[i]>'A')
			if (wd[i]==wd[j]&&wd[j]!=md[i]) {ans++;sum[j]=1;}
			maxn=max(maxn,ans);
			minn=min(minn,ans);
	 }
	}
	tmp=maxn-minn;
	if (prm(tmp)) cout << "Lucky Word"<< endl<< tmp;
	else cout << "No Answer"<< endl<< "0";
	return 0;
}
各位大佬谁能帮蒟蒻找找错误在哪（急迫）orz


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 **附原题及测试点**

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Lucky Word
11