#include <iostream>

using namespace std;

int main()
{
    const int maxtan = 100;
    const int maxver = 100;
    const int maxpon = 50;
    int N = 0;
    int M = 0;
    cin >> N;
    cin >> M;
    int minp[maxpon];
    int resztv[maxver];
    int szam[maxver][maxtan];
    int pont[maxver][maxtan];
    bool siker[maxver][maxtan];

    for (int i = 0; i < M; i++)
    {
        cin >> minp[i];
    }
    for (int i = 0; i < M; i++)
    {
        cin >> resztv[i];
        for (int j = 0; j < resztv[i]; j++)
        {
            cin >> szam[i][j];
            cin >> pont[i][j];
        }
    }

    int resztv2[M];

    for (int i = 0; i < M; i++)
    {
        resztv2[i] = 0;
        for (int j = 0; j < resztv[i]; j++)
        {
            if ( pont[i][j] >= minp[i] )
            {
                resztv2[i] = resztv2[i] + 1;
                siker[i][j] = true;
            }
            else
            {
                siker[i][j] = false;
            }
        }
    }

     for (int i = 0; i < M; i++)
    {
        cout << resztv2[i];
        for (int j = 0; j < resztv[i]; j++)
        {
            if ( siker[i][j] == true)
            {
                cout << " " << szam[i][j];
            }
        }
        cout << endl;
    }

}