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#include<cstdio>
#include<cstring>
#include<string>
#include<sstream>
#include<cmath>
#include<cctype>
#include<cstdlib>
#include<iostream>
#include<algorithm>
using namespace std;
#define N 2005

struct node{
	double x,y,d;
};
node sq[N];
int parent[N];
int find(int i){
	if ( i== parent[i])
		return i;
	else parent[i]=find(parent[i]);
}
int main()
{
	//freopen("in.txt","r+",stdin);
	int i,n,t,cas=1,pu,pv,ans,j;
	double m;
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d",&n);
		for(i=0;i<=n;i++) parent[i]=i;
		for(i=0;i<n;i++){
			scanf("%lf %lf %lf",&sq[i].x,&sq[i].y,&sq[i].d);
		}
		for(i=0;i<n;i++){
			pu=find(i);
			m=(sq[i].d)/2.0;
			for(j=0;j<n;j++){
				if(i==j) continue;
				pv=find(j);
				if(pu!=pv){
					if(sq[j].x>=(sq[i].x-m)&&sq[j].x<=(sq[i].x+m)&&sq[j].y>=(sq[i].y-m)&&sq[j].y<=(sq[i].y+m)){
						parent[pv]=parent[pu];
					}
				}
			}
		}
		ans=0;
		for(i=0;i<n;i++){
			if(parent[i]==i)
				ans++;
		}
		printf("%d\n",ans);
	}
	return 0;
}