#include <iostream>

using namespace std;
int Voc(char c)
{
  return c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u';
}
int Cons(char c)
{
  return c >= 'a' && c <= 'z' && Voc(c)==0;
}
void F(char s[])
{
    int i, c=0;
 for(i = 0; s[i] != 0; i++)
        {
            if(Cons(s[i])==1)
            {
                if(s[i] != 'a' && s[i] != 'e'&& s[i] != 'o' && s[i] != 'u')
            c++;
            }
        }
    if(c == i) cout << "DA";
    else cout << "NU";
}

int main()
{
    char s[1000];
    cin.getline(s, 1000);
    F(s);

    return 0;
}