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#include <bits/stdc++.h>
using namespace std;
ifstream fin("balanta.in");
ofstream fout("balanta.out");
int n, m, a[5002], k, r, i, j;
int fr[5002], e;
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 + k; j <= 2 * k; j++) fin >> a[j];
fin >> r;
if(r == 1) {
for(j = 1; j <= k; j++) fr[a[j]]++;
}
else if(r == 2) {
for(j = 1 + k; j <= 2 * k; j++) fr[a[j]]++;
}
}
r = 0;
for(i = 1; i <= n; i++) {
if(fr[i] > r) {
r = fr[i];
e = i;
}
}
fout << e;
return 0;
}