#include<bits/stdc++.h>
using namespace std;
#define N 1005
typedef double db;
int n,m,now,ans;
db R,x[N],y[N],r[N],a[N],b[N],ax,ay,tx,ty;
db getr(db u,db v){
	db res=R;
	for(int i=1;i<=n;++i)res=min(res,sqrt((x[i]-u)*(x[i]-u)+(y[i]-v)*(y[i]-v))-r[i]);
	return res;
}
int kill(db u,db v,db w){
	int res=0;
	for(int i=1;i<=m;++i)res+=sqrt((u-a[i])*(u-a[i])+(v-b[i])*(v-b[i]))<=w;
	return res;
}
void sa(){
	double tim=2500;
	while(tim>1e-15){
		tx=ax+((rand()<<1)-RAND_MAX)*tim;
		ty=ay+((rand()<<1)-RAND_MAX)*tim;
		now=kill(tx,ty,getr(tx,ty));
		if(now>ans){
			ans=now;
			ax=tx;
			ay=ty;
		}else if(exp((ans-now)/tim)*RAND_MAX<rand()){
			ax=tx;
			ay=ty;
		}
		tim*=0.996;
	}
}
int main(){
	srand(618520);
	scanf("%d%d%lf",&n,&m,&R);
	for(int i=1;i<=n;++i)scanf("%lf%lf%lf",&x[i],&y[i],&r[i]);
	for(int i=1;i<=m;++i)scanf("%lf%lf",&a[i],&b[i]),ax+=a[i],ay+=b[i];
	ax/=m;ay/=m;
	while(clock()<=0.618520*CLOCKS_PER_SEC)sa();
	printf("%d",ans);
	return 0;
}