#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("balanta.in");
ofstream fout("balanta.out");
int frg[1050],fru[1050],a[1050],b[1050],tip,sol1,sol2,nr1,nr2,sol;
/// 0 nu se stie cum e moneda
/// 1 moneda e sigura
int n,m,i,j,k;
int main()
{
    fin>>n>>m;
    for(i=1;i<=m;i++){
        fin>>k;
        for(j=1;j<=k;j++)
            fin>>a[j];
        for(j=1;j<=k;j++)
            fin>>b[j];
        fin>>tip;
        if(tip==0)
            for(j=1;j<=k;j++){
            frg[a[j]]=frg[b[j]]=1;
            fru[a[j]]=fru[b[j]]=1;
            /// sunt toate sigure
            }
        if(tip==1){
            for(j=1;j<=k;j++){
                frg[b[j]]=fru[a[j]]=1;
            }
            /// daca moneda e grea balanta 2 e sigura
        }
        if(tip==2){
            for(j=1;j<=k;j++){
                fru[b[j]]=frg[a[j]]=1;
            }
            /// daca moneda e grea balanta 1 e sigura
        }
    }
    for(i=1;i<=n;i++){
        if(fru[i]==0){
            nr1++;
        if(nr1==1)
            sol1=i;

        }
    }
    for(i=1;i<=n;i++){
        if(frg[i]==0){
            nr2++;
            if(nr2==1)
            sol2=i;
        }
    }

if (!(nr1==1&&nr2== 1))
	{
		if (nr1==1&&frg[sol1] == 1)
            sol = sol1;

		if (nr2==1&&fru[sol2] == 1)
            sol = sol2;

	}
	fout<<sol;
}