ali...cpp

#include <cstdlib>
#include <string>
#include <algorithm>
#include <iostream>

using namespace std;

int main() {

    while(1) {
        int n, count = 0, i, j;
        cin >> n;

        if(!n)
            break;

        string dna[n];

        for(i = 0; i < n; i++) {
            cin >> dna[i];
            sort(dna[i].begin(), dna[i].end());

            for(j = 0; j < i; j++)
                if(dna[i] != dna[j])
                    count++;
        }

        cout << count << endl;
    }

    return 0;
}