#include <iostream>

using namespace std;
int main()
{
    int x, y, c, k = 1, xx = 0, yy = 0, ogl = 0;
    cin >> x >> y;
    while (x != 0)
    {
        c = x % 10;
        if (c % 2 == 1)
        {
            xx = xx + c * k;
            k = k * 10;
        }
        x = x / 10;
    }
    k = 1;
    while (y != 0)
    {
        c = y % 10;
        if (c % 2 == 1)
        {
            yy = yy + c * k;
            k = k * 10;
        }
        y = y / 10;
    }
    while (xx != 0)
    {
        ogl = ogl * 10 + xx % 10;
        xx = xx / 10;
    }
    if (ogl == yy && ogl != 0)
        cout << "DA";
    else
        cout << "NU";
    return 0;
}