#include <iostream>
#include <fstream>
using namespace std;
int x,y,n,c,i,j,v[100005],k,l;
int main()
{
    ifstream fin ("disjoint.in");
    ofstream fout ("disjoint.out");
    fin>>n>>k;


    for (i=1;i<=k;++i){
        fin>>c;

        if (c==1){
            fin>>x>>y;
            v[x]=y;
        }
        else{
            fin>>j>>l;
            while(v[j]!=0)
                j=v[j];
            while(v[l]!=0)
                l=v[l];
            if(l==j)
                fout<<"DA"<<endl;
            else
                fout<<"NU"<<endl;

        }
    }
    return 0;
}