#include <bits/stdc++.h>
using namespace std;

ifstream f("disjoint.in");
ofstream g("disjoint.out");

int v[100001];
int N, M, cod, x, y;

int radacina(int aux){

    while (v[aux] != 0)
        aux = v[aux];

    return aux;
}

int main(){
    f>> N >> M;

    for (int i = 0; i < M; i++){
        f >>cod>>x>>y;

        if (cod == 1)
            v[radacina(y)] = radacina(x);

        else if (radacina(x) == radacina(y))
            g << "DA"<<endl;
        else
            g << "NU"<<endl;

    }

    return 0;

}