from collections import Counter


def main():
    N = int(input())
    members = [list(map(int, input().split())) for _ in range(N)]
    M = int(input())
    mentaiko = [list(map(int, input().split())) for _ in range(M)]

    mentaiko_purchased = [0 for _ in range(M)]
    for member_saifu, member_karami_want in members:
        for idx, (cost, karami) in enumerate(mentaiko):
            if member_saifu >= cost and member_karami_want <= karami:
                mentaiko_purchased[idx] += 1

    miracle_mentaiko_num = max(mentaiko_purchased)
    if miracle_mentaiko_num == 0:
        print(0)
        return

    for idx, mentaiko_num in enumerate(mentaiko_purchased, 1):
        if mentaiko_num == miracle_mentaiko_num:
            print(idx)


if __name__ == "__main__":
    main()