#include <bits/stdc++.h>
int i, j, n, d;
int main() {
  scanf("%d%d%d%d", &i, &j, &n, &d);
  int f[30];
  int g[30];
  int v = d * d;
  int a[500][500];
  for (int k = 0; k < n; k++) {
    scanf("%d", &f[k]);
    scanf("%d", &g[k]);
  }
  for (int x = d - i; x >= 0; x--)
    for (int y = d - j; y >= 0; y--) {
      if ((x + i) * (x + i) + (y + j) * (y + j) > v)
        a[x][y] = 3;
      else
        for (int p = 0; p < n; p++) {
          if (a[x + f[p]][y + g[p]] == 2) {
            a[x][y] = 1;
            break;
          } else
            a[x][y] = 2;
        }
    }
  if (a[0][0] == 1)
    printf("Anton");
  else
    printf("Dasha");
  return 0;
}
