#include <iostream>
using namespace std;
int sumcifrepare(int n){
int s = 0;
while(n > 0) {
int cif = n % 10;
if(cif % 2 == 0)
s = s + cif;
n = n / 10;
}
return s;
}
int main() {
int a , b;
cin >> a >> b;
if(sumcifrepare(a) == sumcifrepare(b))
cout << "DA";
else
cout << "NU";
return 0;
}