#include <bits/stdc++.h>
using namespace std;
int xs[200];
int ys[200];
int n;
int d;
int mem[401][401][2][2];
int f(int x, int y, int u, int v) {
  int dx = x - 200;
  int dy = y - 200;
  if (dx * dx + dy * dy > d * d) {
    return 1;
  }
  if (mem[x][y][u][v]) {
    return mem[x][y][u][v];
  }
  int ret = -1;
  if (u == 0) {
    if (f(y, x, v, 1) == -1) {
      v = 1;
    }
  }
  for (int i = 0; i < n; i++) {
    if (f(x + xs[i], y + ys[i], v, u) == -1) {
      ret = 1;
      break;
    }
  }
  return mem[x][y][u][v] = ret;
}
int main() {
  int x, y;
  scanf("%d%d%d%d", &x, &y, &n, &d);
  for (int i = 0; i < n; i++) {
    scanf("%d%d", xs + i, ys + i);
  }
  if (f(x + 200, y + 200, 0, 0) == 1) {
    puts("Anton");
  } else {
    puts("Dasha");
  }
  return 0;
}
