直接哈希就行，不需要排序。哈希函数弄成跟顺序无关的，比如全部加起来
by bh1234666 @ 2023-07-02 19:02:24
@[luozhih](/user/602632)
离散化，AC。
```cpp
#include<bits/stdc++.h>
#define int long long
#define lg log2
using namespace std;
map<char,int>mp;
set<char>st;
vector<string>vec;
int n,ans;
signed main(){//核心思想：离散化
// freopen("test.in","r",stdin);
cin>>n;
for(int i=1;i<=n;i++){
string s="";
cin>>s;
bool b=0;
st.clear();
mp.clear();
for(int j=0;j<s.length();j++){
st.insert(s[j]);
++mp[s[j]];
}
s="";
for(auto v:st){
s+=char(mp[v]+48);
s+=v;
}
for(int j=0;j<vec.size();j++){
if(s==vec[j]){
b=1;
break;
}
}
// cout<<s<<'\n';
if(!b){
vec.push_back(s);
++ans;
// cout<<"init\n";
}
}
cout<<ans<<'\n';
return 0;
}
/*
3
AABAC
CBAAA
AAABB
*/
```
by Igallta @ 2023-12-24 10:02:48