#include <bits/stdc++.h>
int dp[405][405], vx[25], vy[25], x, y, d, n;
int saya(int x, int y) {
  if (x * x + y * y > d * d) return 1;
  int &ret = dp[x + 200][y + 200];
  if (ret != -1) return ret;
  for (int i = 0; i < n; i++)
    if (!saya(x + vx[i], y + vy[i])) return ret = 1;
  return ret = 0;
}
int main() {
  scanf("%d%d%d%d", &x, &y, &n, &d);
  for (int i = 0; i < n; i++) {
    scanf("%d%d", &vx[i], &vy[i]);
  }
  memset(dp, -1, sizeof(dp));
  if (saya(x, y))
    puts("Anton");
  else
    puts("Dasha");
}
