#include <iostream>
#include <fstream>

using namespace std;

bool a[1100],a1[1100];
int s[1100],d[1100],n;

int main()
{
    ifstream fin("balanta.in");
    ofstream fout("balanta.out");
    int n,m,i,j,k,r,p,nr=0;
    fin>>n>>m;
    for(i=1;i<=m;i++)
    {
        fin>>k;
        for(j=1;j<=k;j++)
            fin>>s[j];
        for(j=1;j<=k;j++)
            fin>>d[j];
        fin>>r;
        if(r==0)
        {
            for(j=1;j<=k;j++)
            {
                a[s[j]]=0;
                a[d[j]]=0;
                a1[s[j]]=0;
                a1[d[j]]=0;
            }
        }
        else
        if(r==1)
        {
            for(j=1;j<=k;j++)
            {
                a[s[j]]=1;
                a[d[j]]=0;
                a1[s[j]]=1;
                a1[d[j]]=0;
            }
        }
        else
        if(r==2)
        {
            for(j=1;j<=k;j++)
            {
                a[s[j]]=0;
                a[d[j]]=1;
                a1[s[j]]=0;
                a1[d[j]]=1;
            }
        }
    }
    for(i=1;i<=n;i++)
    {
        if(a[i])
        {
            nr++;
            p=i;
        }
    }
    if(nr==1)
        fout<<p;
    else
    {
        nr=0;
        for(i=1;i<=n;i++)
        {
            if(a1[i])
            {
                nr++;
                p=i;
            }
        }
        if(nr==1)
            fout<<p;
        else
            fout<<0;
    }
    return 0;
}