#include <iostream>
#include <vector>
#include <fstream>

using namespace std;

int tata[100001];
int grad[100001];

int n,m;

int find_father(int node)
{
    if(tata[node] == node)
        return node;
    tata[node] = find_father(tata[node]);
    return tata[node];
}

void Read()
{
    int cod,x,y;
    ifstream f("disjoint.in");
    ofstream g("disjoint.out");

    f >> n >> m;

    for(int i=1;i<=n;i++)
    {
        tata[i] = i;
        grad[i] = 1;
    }

    for(int i=1;i<=m;i++)
    {
        f >> cod >> x >> y;
        int A = find_father(x);
        int B = find_father(y);
        if(cod == 1)
        {
            if(A != B)
            {

                if(grad[A] < grad[B])
                {
                    tata[A] = B;
                    grad[B] += grad[A];
                }
                else
                {
                    tata[B] = A;
                    grad[A] += grad[B];
                }
            }
        }
        else
        {
            if(A == B)
                g << "DA" << endl;
            else
                g << "NU" << endl;

        }
    }
}

int main()
{
    Read();
    return 0;
}