#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n;
    cin >> n;
    vector<int> a(n), b(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i] >> b[i];
    }
    int m;
    cin >> m;
    vector<int> x(m), y(m);
    for (int i = 0; i < m; i++) {
        cin >> x[i] >> y[i];
    }

    vector<int> cnt(m, 0);
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cnt[j] += (x[j] <= a[i] && y[j] >= b[i]);
        }
    }

    int maxv = 0;
    for (int i = 0; i < m; i++) {
        maxv = max(maxv, cnt[i]);
    }

    if (maxv == 0) {
        cout << 0 << endl;
    } else {
        for (int i = 0; i < m; i++) {
            if (cnt[i] == maxv) cout << i + 1 << endl;
        }
    }
    return 0;
}