#include <fstream>
#include <queue>
#include <vector>
#define N 50002
#define INF 2000000000

using namespace std;

int dc[N],dist[N];

struct bla
{
    int no,co;
};
vector <bla> graph[N];

struct how
{
    bool operator()(bla A, bla B)
    {
        return (A.co>B.co);
    }
};
priority_queue <bla, vector <bla>, how> q;
bool viz[N];

void dijkstra(int nod)
{
    int ve,d;
    viz[nod]=1;
    dist[nod]=0;
    q.push({nod,0});
    while(!q.empty())
    {
        nod=q.top().no;
        d=q.top().co;
        q.pop();
        viz[nod]=0;
        for(int i=0;i<graph[nod].size();++i)
        {
            ve=graph[nod][i].no;
            if(!viz[ve])
                if(dist[ve]>dist[nod]+d)
                    viz[ve]=1,dist[ve]=dist[nod]+d,q.push({ve,dist[ve]});
        }
    }
}
int main()
{
    ifstream f("distante.in");
    ofstream g("distante.out");
    int t,n,m,st,x,y,c,ok;
    f>>t;
    while(t--)
    {
        f>>n>>m>>st;
        ok=1;
        for(int i=1;i<=n;++i) f>>dc[i],dist[i]=INF,viz[i]=0,graph[i].clear();;
        for(int i=1;i<=m;++i)
        {
            f>>x>>y>>c;
            graph[x].push_back({y,c});
            graph[y].push_back({x,c});
        }
        dijkstra(st);
        for(int i=1;i<=n;++i)
            if(dist[i]!=dc[i])
            {
                g<<"NU\n";
                ok=0;
                break;
            }
            if(ok)
                g<<"DA\n";
    }
    f.close();
    g.close();
    return 0;
}