#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int n, d;
  cin >> n >> d;
  int t;
  cin >> t;
  while (t--) {
    long long int x, y;
    cin >> x >> y;
    long long int eq1 = y * (n - d) - ((n - d) * (x - d));
    long long int eq2 = (y - (n - d)) + (x - (n));
    long long int eq3 = ((y - n) - (x - (n - d)));
    long long int eq4 = (y - d) + (x);
    if (eq1 >= 0 && eq2 <= 0 && eq3 <= 0 && eq4 >= 0)
      cout << "YES\n";
    else
      cout << "NO\n";
  }
}
