#include <iostream>
#include<string.h>
#include<cstring>

using namespace std;

int main() {  
//	int a,count1,count2,count,n,i,p,r,q,coun=0; 
	int t,n,i; 
	cin>>t; 
	string p,out; 
	while(t--) 
	{ 
		cin>>n>>p; 
		int a[n]; 
		for(i=0;i<n;i++) 
		{cin>>a[i]; } 
		if(n==1) 
		{ 
			if(p=="Dee"&& a[0]%2==0)
			{ 
				cout<<"Dee\n";
			} 
			else 
			{ 
				cout<<"Dum\n";
			}
    }
    else if(n>1)
        {
           // cout<<"hello"<<endl;
            cout<<"Dum\n";
        }
    //cout<<out<<endl;
}


}