#include <iostream>
using namespace std;
int main() {
int price, money;
cin >> price >> money;
int flag = 1, counter = 0;
while (counter <= price) {
if (counter == price && money != 0) {
flag = 0;
}
counter += 2;
}
if (flag == 0) {
cout << "DA";
} else {
cout <<"NU";
}
return 0;
}
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