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#include <fstream>
using namespace std;
int n,m,i,j,gr[1025],us[1025],VER,k,sol,x,v1[1025],v2[1025];
int main (){
ifstream fin ("balanta.in");
ofstream fout ("balanta.out");
fin>>n>>m;
for (i=1;i<=n;i++){
gr[i]=1;
us[i]=1;
}
for (i=1;i<=m;i++){
fin>>k;
for (j=1;j<=n;j++)
v1[j]=v2[j]=0;
for (j=1;j<=k;j++){
fin>>x;
v1[x]=1;
}
for (j=1;j<=k;j++){
fin>>x;
v2[x]=1;
}
fin>>VER;
if (VER==1)
for (j=1;j<=n;j++){
if (v1[j]==1)
us[j]=0;
if (v2[j]==1)
gr[j]=0;
if (v1[j]==0&&v2[j]==0)
us[j]=gr[j]=0;
}
else
if (VER==2)
for (j=1;j<=n;j++){
if (v1[j]==1)
gr[j]=0;
if (v2[j]==1)
us[j]=0;
if (v1[j]==0&&v2[j]==0)
us[j]=gr[j]=0;
}
else
for (j=1;j<=n;j++)
if (v1[j]==1||v2[j]==1)
us[j]=gr[j]=0;
}
for (i=1;i<=n;i++) {
if (us[i]==1) {
sol++;
k=i;
}
if (gr[i]==1) {
sol++;
k=i;
}
}
if (sol == 1)
fout<<k;
else
fout<<0;
}