#include <bits/stdc++.h>
using namespace std;
const int N = 25;
int x[N], y[N];
int d, n;
int memo[500][500];
bool solve(int px, int py) {
  if (px * px + py * py > d * d) return true;
  int &ret = memo[px + 200][py + 200];
  if (!ret) {
    ret = -1;
    for (int i = (0), _b = (n); i < (_b); ++i)
      if (!solve(px + x[i], py + y[i])) {
        ret = 1;
        return true;
      }
  }
  return ret > 0;
}
int main() {
  int ox, oy;
  cin >> ox >> oy >> n >> d;
  for (int i = (0), _b = (n); i < (_b); ++i) {
    cin >> x[i] >> y[i];
  }
  if (solve(ox, oy))
    cout << "Anton" << endl;
  else
    cout << "Dasha" << endl;
  return 0;
}
