#include <iostream>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    long long x1, y1, x2, y2;
    long long x3, y3, x4, y4;

    if (cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4) {
        long long dx1 = x2 - x1;
        long long dy1 = y2 - y1;
        long long dx2 = x4 - x3;
        long long dy2 = y4 - y3;

        long long tich = dx1 * dy2 - dy1 * dx2;

        if (tich == 0) {
            cout << "DONG HA\n";
        } else {
            cout << "NAM ANH\n";
        }
    }

    return 0;
}