include<iostream>

using namespace std;

int main()
{
int h1,m1,h2,m2,h3,m3,i;
cin>>h1>>m1;
cin>>h2>>m2;
cin>>h3>>m3;
if(h1<9 and m1>=30 or h2<9 and m2>=30 or h3 <9 and m3>=30 and h1<14 and m1<=50 or h2<14 and m2<=50 or h3<14 and m3<=50)
{
cout<<„DA“;
}
else
{
cout<<„NE“;
}

return 0;

}