#include <bits/stdc++.h>
using namespace std;
int x, y, n, d, x_i, y_i;
vector<pair<int, int> > v;
double dist(double x1, double y1) { return sqrt(pow(x1, 2) + pow(y1, 2)); }
int a[605][605];
int f(int _x, int _y) {
  if (a[200 + _x][200 + _y] == -1) {
    int tmp = 1;
    if (dist(_x, _y) <= d) {
      for (auto _i : v) {
        if (f(_x + _i.first, _y + _i.second)) {
          tmp = 0;
          break;
        }
      }
    } else {
      tmp = 0;
    }
    a[200 + _x][200 + _y] = tmp;
  }
  return a[200 + _x][200 + _y];
}
int main() {
  ios::sync_with_stdio(0);
  cin >> x >> y >> n >> d;
  (memset(a, -1, sizeof(a)));
  for (int(i) = (0); (i) < (n); (i)++) {
    cin >> x_i >> y_i;
    v.push_back({x_i, y_i});
  }
  cout << (!f(x, y) ? "Anton" : "Dasha") << endl;
  return 0;
}
