#include <fstream>
#include <cstring>

#define maxn 1024

using namespace std;

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

int v[maxn],a[maxn],b[maxn],mark[maxn],use[maxn];
int k,c,maxv,mini,maxi,n,m,ok1,ok2;

int main()
{
    fin>>n>>m;

    for (int i=1; i<=m; ++i)
    {
        fin>>k;

        memset (use,0,sizeof(use));

        for (int i=1; i<=k; ++i)
        {
            fin>>a[i];
            use[a[i]] = 1;
        }

        for (int i=1; i<=k; ++i)
        {
            fin>>b[i];
            use[b[i]] = 1;
        }

        fin>>c;
        maxv = 0;

        if (c==0)
        {
            for (int i=1; i<=k; ++i)
            {
                mark[a[i]] = 1;
                mark[b[i]] = 1;
            }
        }
        else if (c==1)
        {
            for (int i=1; i<=k; ++i)
            {
                maxv = max (maxv,v[b[i]]);
            }

            for (int i=1; i<=k; ++i)
            {
                 v[a[i]] = max (v[a[i]],maxv +1);
            }

            for (int i=1; i<=n; ++i)
            {
                if (!use[i]) mark[i] = 1;
            }
        }
        else
        {
            for (int i=1; i<=k; ++i)
            {
                maxv = max (maxv,v[a[i]]);
            }

            for (int i=1; i<=k; ++i)
            {
                v[b[i]] = max (v[b[i]],maxv +1);
            }

            for (int i=1; i<=n; ++i)
            {
                if (!use[i]) mark[i] = 1;
            }
        }
    }

    maxi = 1; mini = 1;
    ok1 = 0, ok2 = 0;

    for (int i=1; i<=n; ++i)
    {
        if (mark[i]) continue;

        if (v[i] > v[maxi])
        {
            maxi = i;
            ok1 = 1;
        }
        else if (v[i]==v[maxi])
        {
            ok1 = 0;
        }

        if (v[i] < v[mini])
        {
            mini = i;
            ok2 = 1;
        }
        else if (v[i]==v[mini])
        {
            ok2 = 0;
        }
    }

    if (ok1 && !ok2) fout<<maxi;
    else if (ok2 && !ok1) fout<<mini;
    else fout<<0;
}