#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
ifstream in("disjoint.in");
ofstream out("disjoint.out");

int main()
{
    int N,M;
    in>>N>>M;
    vector <vector<int>> V(N+1);
    int i,tip,x,y,ok=0;
    for(i=1;i<=N;i++)
    {
        V[i].push_back(i);
    }
    for(i=1;i<=M;i++)
    {
        in>>tip>>x>>y;
        if(tip==1)
        {
            V[x].push_back(y);
            V[y].push_back(x);
        }
        if(tip==2)
        {
            ok=0;
            for(int k=1;k<=N;k++)
            {
                int gasit=0;
                for(auto j:V[k])
                    if(j==x || j==y)
                        gasit++;
                if(gasit==2)
                {
                    ok=1;
                    out<<"DA"<<endl;
                    break;
                }
            }
            if(ok==0)
                out<<"NU"<<endl;
        }
    }
    return 0;
}