#include <bits/stdc++.h>
using namespace std;
int f[3000];
int main() {
  int n; cin >> n;
  for (int i = 1; i <= n; i++) {
    int x; cin >> x;
    f[x]++;
  }
  if (f[2020] >= 1) {
    cout << "DA\n";
    return 0;
  }
  if (f[1010] >= 1 && f[2] >= 1) {
    cout << "DA\n";
    return 0;
  }
  if (f[505] >= 1 && f[4] >= 1) {
    cout << "DA\n";
    return 0;
  }
  if (f[505] >= 1 && f[2] >= 2) {
    cout << "DA\n";
    return 0;
  }
  if (f[101] >= 1 && f[20] >= 1) {
    cout << "DA\n";
    return 0;
  }
  if (f[101] >= 1 && f[5] >= 1 && f[4] >= 1) {
    cout << "DA\n";
    return 0;
  }
  if (f[101] >= 1 && f[5] >= 1 && f[2] >= 2) {
    cout << "DA\n";
    return 0;
  }
  if (f[101] >= 1 && f[10] >= 1 && f[2] >= 1) {
    cout <<"DA\n";
    return 0;
  }
    if (f[202] >= 1 && f[10] >= 1) {
        cout << "DA\n";
        return 0;
    }
    if (f[202] >= 1 && f[5] >= 1 && f[2] >= 1) {
        cout << "DA\n";
        return 0;
    }
    if (f[404] >= 1 && f[5] >= 1) {
        cout << "DA\n";
        return 0;
    }
  cout << "NU\n";
  return 0;
}