#include <bits/stdc++.h>

using namespace std;

ifstream fin("balanta.in");
ofstream fout("balanta.out");

long long x[1100], y[1100], a[1100], b[1100];
long long i, j, k, l, q, p, n, m;

int main()
{
    fin >> n >> m;
    for (i = 1; i <= n; i++)
        a[i] = b[i] = 1;
    for (i = 1; i <= m; i++)
    {
        fin >> k;
        for (j = 1; j <= k; j++)
        {
            fin >> q;
            x[q] = 1;
        }
        for (j = 1; j <= k; j++)
        {
            fin >> q;
            y[q] = 1;
        }
        fin >> q;
        if (q == 0)
            for (j = 1; j <= n; j++)
            {
                if (x[j] || y[j])
                {
                    a[j] = 0;
                    b[j] = 0;
                }
            }
        else if (q == 1)
            for (j = 1; j <= n; j++)
            {
                if (!x[j])  a[j]=0;
                if (!y[j])  b[j]=0;
            }
        else
            for (j = 1; j <= n; j++)
            {

                if (!y[j])  a[j]=0;
                if (!x[j])  b[j]=0;
            }
        memset(x,0,sizeof(x));
        memset(y,0,sizeof(y));
    }
    i = 0;
    j = 0;
    for (l = 1; l <= n; l++)
    {
        if (a[l])
        {
            i++;
            p = l;
        }
        if (b[l])
        {
            j++;
            p = l;
        }
    }
    if ((i == 1 && !j)||(j == 1&& !i))
        fout << p << "\n";
    else    fout << "0\n";


    return 0;
}