Atestat32

#include <iostream>

using namespace std;

int main()
{
    int a,b;

    cin>>a>>b;

    int f1=0,f2=1;

    do
    {
        int aux;
        aux=f1;
        f1=f1+f2;
        f2=aux;
    }
    while (f1<a);


    if(f1==a&&f2==b)
        cout<<"DA";

    else cout<<"NU";



    return 0;
}