#include <iostream>
using namespace std;

const int TEN = 10;

int main() {
	int a;
	cin >> a;
	int odd = 1;
	while (a > 0) {
		odd = 0;
		if (a % TEN < 4 || a % TEN % 2 != 0) {
			odd = 1;
		}
		a /= TEN;
	}
	if (odd == 0) {
		cout << "DA";
	} else {
		cout << "NU";
	}
	return 0;
}