#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
struct book {
    int o_ind;
    int score;
    vector<int> libs;
    int ind_lib;
};

struct library{
    int o_ind;
    double val;
    int days;
    int bpday;
    vector<int> bs;
    int ind_book;
};

bool cmp(book a, book b) {
    if(a.score == b.score) return a.o_ind < b.o_ind;
    return a.score > b.score;
}
bool cmp_lib(library l1, library l2) {
    if(l1.val == l2.val) return l1.bs.size() < l2.bs.size();
    return l1.val > l2.val;
}
int main() {

    freopen("input.txt", "r", stdin);
    freopen("output2.txt", "w", stdout);

    int b, l ,d;
    cin >> b >> l >> d;
    vector<book> books(b);
    vector<library> libs_(l);
    for(int i = 0; i < b; ++ i) {
        int x;
        cin >> x;
        vector<int> v = {};
        books[i] = {i, x, v, 0};
    }
    vector< vector<int> > V(l);

    for(int i = 0; i < l; ++ i) {
        int n, days, nbsp;
        cin >> n >> days >> nbsp;
        int total_score = 0;
        vector<int> inds;
        for(int j = 0; j < n; ++ j) {
            int x;
            cin >> x;
            inds.push_back(x);
            total_score += books[x].score;
        }
        auto val = (double) (1.0 * total_score * nbsp / days);
        V.push_back(inds);
        libs_[i] = {i, val, days, nbsp, inds, 0};
    }
    sort(libs_.begin(), libs_.end(), cmp_lib);

    for(int i = 0; i < libs_.size(); ++ i) {
        for(auto e : libs_[i].bs)
            books[e].libs.push_back(i);
    }

    sort(books.begin(), books.end(), cmp);
    int curr_book = 0;
    vector<int> marked_lib(l, 0);
    vector<int> marked_book(b, 0);
    vector<int> out_libs;
    int total_sup = 0;
    vector< vector <int> > out_books;
    while(curr_book < b) {
        while(curr_book < b && marked_book[curr_book]) {
            curr_book++;
//            cout << curr_book;
        }
        if (curr_book == b) {
            break;
        }
        int indb = books[curr_book].o_ind;
        int valb = books[curr_book].score;
        int ind_lib = books[curr_book].ind_lib;
        vector<int> libs = books[curr_book].libs;
        for(int i = ind_lib; i < libs.size(); ++ i) {
            if(marked_lib[libs[i]] == 0) {
                marked_lib[libs[i]] = 1;
                int ind = libs[i];
                out_libs.push_back(libs_[ind].o_ind);
                out_books.push_back({});
                int days = libs_[ind].days;
                total_sup += days;
                int bpday = libs_[ind].bpday;
                vector<int> bs = libs_[ind].bs;
                int ind_book = libs_[ind].ind_book;
                vector<int> curr_day_books;
                int curr_ind_j = 0;

                vector<int> out_b;
                int cur_marked_n = 0;
                int bound = (d - total_sup) * bpday;
                for(int j = ind_book; j < bs.size(); ++j) {
                    if(marked_book[bs[j]] == 0) {
                        out_books.back().push_back(bs[j]);
                        marked_book[bs[j]] = 1;
                        cur_marked_n += 1;
                    }
                    if(cur_marked_n == bound) {
                        curr_ind_j = j;
                        break;
                    }
                }
                libs_[ind].ind_book = curr_ind_j;
            }
        }
        curr_book += 1;
    }
    int output_n = 0;
    for (int i = 0; i < out_libs.size(); ++ i) {
        if (out_books[i].size() > 0) {
            output_n += 1;
        }
    }
    cout << output_n << "\n";
    for(int i = 0; i < out_libs.size(); ++ i) {
        if (out_books[i].size() == 0) {
            continue;
        }
        cout << out_libs[i] << " " << out_books[i].size() << endl;
        for(auto e : out_books[i])
            cout << e << " ";
        cout << endl;
    }

}