#include <iostream>

#include <string>

#include <set>

#include <algorithm>

using namespace std;

int main()

{

int n = 0;

set<string> sset;

cin >> n;

string *s = new string[n];

for (int i = 0; i < n; ++i)

{

cin >> s[i];

sort(s[i].begin(), s[i].end());

sset.insert(s[i]);

}

cout << sset.size() << endl;

return 0;

}

这样可以不？