#include <fstream>
#include <set>
#include <unordered_set>
#include <unordered_map>
using namespace std;

ifstream input_stream;
ofstream output_stream;


// Hashing function?
string getGroupName(set<int16_t> group) {
    string res = "";
    for (auto it = group.begin(); it != group.end(); it++) {
        res += '0' + *it;
    }
    return res;
}


int main() {
    input_stream.open("grupuri.in");
    output_stream.open("grupuri.out");

    int N;
    input_stream >> N;

    unordered_map<string, set<int16_t>> access;

    for (int16_t i = 0; i < N; i++) {
        int m;
        input_stream >> m;

        for (int j = 0; j < m; j++) {
            string code;
            input_stream >> code;

            access[code].insert(i);
        }
    }

    unordered_set<string> groups;

    for (auto it = access.begin(); it != access.end(); it++) {
        groups.insert(getGroupName(it -> second));
    }

    output_stream << groups.size() << endl;

    input_stream.close();
    output_stream.close();
    return 0;
}