#include <iostream>

using namespace std;

int main()
{
    int v[15];
    int n;
    bool f=0;
    cin>>n;
    for (int i=1; i<=n; i++)
    {
        cin>>v[i];
    }
    for(int i=1; i<=n; i++)
    {
        int a=1,b=1,c;
        for(int x=0;x<999999;x++)
        {
            c=a+b;
            if(v[i]==c)
            {
                cout<<"DA \n";
                f=1;
                break;
            }
            else if(v[i]==1)
            {
                cout<<"DA \n";
                f=1;
                break;
            }
            a=b;
            b=c;

        }
        if(f==0)
        {
            cout<<"NU \n";
        }
    }
    return 0;
}