#include<bits/stdc++.h>
#include"testlib.h"
using ll = long long;
using namespace std;

int main(int argc, char* argv[]){
    const int MIN_N = 1;
    const int MAX_N = 100000;
    const int MIN_M = 0;
    const int MAX_M = 100000;
    const int MIN_A = 1;
    const int MAX_A = 1000000000;

    registerValidation(argc, argv);
    int n = inf.readInt(MIN_N, MAX_N);
    inf.readSpace();
    int m = inf.readInt(MIN_M, MAX_M);
    inf.readEoln();
    for (int i = 0; i < m; i++)
    {
        int k = inf.readInt(2, n);
        inf.readSpace();
        int c = inf.readInt(MIN_A, MAX_A);
        int last = 0;
        for (int j = 0; j < k; j++)
        {
            inf.readSpace();
            int s = inf.readInt(last + 1, n);
            last = s;
        }
        inf.readEoln();
    }
    inf.readEof();
    return 0;
}