#include <iostream>
#include <fstream>
#include <iomanip>

using namespace std;

const char CDfd[] = "duom.txt";
const char CDfr[] = "rez.txt";
const int CMax = 100;

void Skaityti (const char CDfd[], int& p, int& n, int A[], int B[][]);

int main()
{
    int p; int n; int lent[CMax]; int preke[CMax][CMax];

    Skaityti(CDfd, p, n, lent, preke);
    for (int i = 0; i < n; i++){
        cout << lent[i] << endl;
        for (int y = 0; y < lent[i]; y++)
        cout << preke[i][y] << endl;
    }

    return 0;
}

void Skaityti (const char CDfd[], int& p, int& n, int A[], int B[][])
{
    ifstream fd(CDfd);
    fd >> p >> n;
    for (int i = 0; i < n; i++){
        fd >> A[i];
        for (int y = 0; y < A[i]; y++){
            fd >> B[i][y];
        }
    }
    fd.close();
}