#include <iostream>
using namespace std;
int main () {
  int n,k,i,m,l;
  cin >>n>>k;
  for (i=1;i<=n;i++) cin >>m;
  for (i=1;i<=k;i++) cin >>l;
  if (n<3) cout <<"DA";
    else cout <<"NE";
  return 0;
}