#include <iostream>

using namespace std;
int a,l,z;
int main()
{
    cin>>z>>l>>a;
    if((a%4==0 && a%100!=0) || (a%400==0))
        if(l>=1 && l<=12)
            if(l==1 || l==3 || l==5 || l==7 || l==8 || l==10 || l==12)
                if(z>=1 && z<=31)
                    cout<<"DA";
                else
                    cout<<"NU";
            else
                if(l==2)
                    if(z>=1 && z<=29)
                        cout<<"DA";
                    else
                        cout<<"NU";
                else
                        if(z>=1 && z<=30)
                            cout<<"DA";
                        else
                            cout<<"NU";

        else
            cout<<"NU";
   else

   if(l>=1 && l<=12)
            if(l==1 || l==3 || l==5 || l==7 || l==8 || l==10 || l==12)
                if(z>=1 && z<=31)
                    cout<<"DA";
                else
                    cout<<"NU";
            else
                if(l==2)
                    if(z>=1 && z<=28)
                        cout<<"DA";
                    else
                        cout<<"NU";
                else
                        if(z>=1 && z<=30)
                            cout<<"DA";
                        else
                            cout<<"NU";

        else
            cout<<"NU";
return 0;
}