#include <bits/stdc++.h>
using namespace std;
void solve(){
	int n,R,r,mi=1e9;
	cin>>n>>R>>r;
	int t=r*2-R;
	vector<int> ans;
	for(int i=1,x,y;i<=n;i++){
		cin>>x>>y;
		int d=max(x*x+y*y,t*t);
		if(d==mi) ans.push_back(i);
		if(d<mi) mi=d,ans={i};
	}
	cout<<ans.size()<<"\n";
	for(int x:ans) cout<<x<<" ";
	cout<<"\n";
}
int main(){
	cin.tie(0)->sync_with_stdio(0);
	int t;
	cin>>t;
	while(t--) solve();
	return 0;
}