#include <bits/stdc++.h>   using namespace std;   int xx[4] = {0, 0, 1, -1};   int yy[4] = {1, -1, 0, 0};   int n, m, b, s;   int x[int(1e5)], y[int(1e5)];   int main() {     scanf( %d%d , &n, &m);     scanf( %d , &b);     for (int i = (1), _b = (b); i <= _b; i++) {       scanf( %d , &s);       x[s] = true;     }     scanf( %d , &b);     for (int i = (1), _b = (b); i <= _b; i++) {       scanf( %d , &s);       y[s] = true;     }     for (int i = (0), _b = (2 * n * m); i <= _b; i++) {       int u = i % n;       int v = i % m;       if (x[u] || y[v]) {         x[u] = true;         y[v] = true;       }     }     for (int i = (0), _b = (n - 1); i <= _b; i++)       if (!x[i]) {         cout <<  No  << endl;         return 0;       }     for (int i = (0), _b = (m - 1); i <= _b; i++)       if (!y[i]) {         cout <<  No  << endl;         return 0;       }     cout <<  Yes  << endl;   }   