#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, m, b, g, x, y;
  bool women[100], man[100];
  cin >> n >> m;
  cin >> b;
  for (int i = 0; i < n; i++) man[i] = 0;
  for (int i = 0; i < m; i++) women[i] = 0;
  for (int i = 0; i < b; i++) {
    cin >> x;
    man[x] = 1;
  }
  cin >> g;
  for (int i = 0; i < g; i++) {
    cin >> y;
    women[y] = 1;
  }
  for (int i = 0; i <= (n * m) * (n * m); i++) {
    if (man[i % n] == 1)
      women[i % m] = 1;
    else {
      if (women[i % m] == 1) man[i % n] = 1;
    }
  }
  bool flag1 = 1, flag2 = 1;
  for (int i = 0; i < n; i++) flag1 *= man[i];
  for (int i = 0; i < m; i++) flag2 *= women[i];
  if (flag1 == 1 && flag2 == 1)
    cout << "Yes";
  else
    cout << "No";
}
