// https://www.youtube.com/watch?v=CrymicX875M
// Angel of mercy
// How did you move me
// Why am I on my feet again

#ifndef ONLINE_JUDGE
#include "templates/debug.hpp"
#else
#define debug(...)
#endif

#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
using u64 = uint64_t;

void solve() {
    int n, R, r; cin >> n >> R >> r;
    vector<int> x(n), y(n);
    for (int i = 0; i < n; i++) {
        cin >> x[i] >> y[i];
    }
    vector<double> dist(n);
    for (int i = 0; i < n; i++) {
        dist[i] = max<double>(hypot(x[i], y[i]), abs(2 * r - R));
    }
    double eps = 1e-9;
    vector<int> ans;
    for (int i = 0; i < n; i++) {
        if (ans.empty() || dist[i] < dist[ans.back()] - eps) {
            ans = {i};
        } else if (abs(dist[i] - dist[ans.back()]) < eps) {
            ans.push_back(i);
        }
    }
    // if (r == R) {
    //     ans.resize(n);
    //     iota(ans.begin(), ans.end(), 0);
    // }
    int m = ans.size();
    cout << m << "\n";
    for (int i = 0; i < m; i++) {
        cout << ans[i] + 1 << " \n"[i == m - 1];
    }
}
#undef int

// Make bold hypotheses and verify carefully
int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int t = 1;
    cin >> t;
    while (t--) {
        solve();
    };
}