#include <iostream>

using namespace std;

int v[100], n;

bool di (int st, int dr) {
    if (st == dr) {
        if (v[st] % 2 == 1) return true;
        else return false;
    } else {
        int mij = (st + dr)/2;
        return (di(st, mij) || di(mij+1, dr));
    }
}

int main()
{
    cin >> n;

    for (int i = 0; i < n; i++) {
        cin >> v[i];
    }

    if(di (0, n-1)) cout << "DA";
    else cout << "NU";

    return 0;
}