n = int(input())
members = sorted([list(map(int, input().split())) for _ in range(n)], key=lambda x:-x[0])
m = int(input())
mentaiko = [list(map(int, input().split())) for _ in range(m)]
mentaiko_count = [0] * m

for i, (x, y) in enumerate(mentaiko):
    for price, hot in members:
        if x <= price:
            if y >= hot:
                mentaiko_count[i] += 1
        else:
            break

kiseki = [i + 1 for i, x in enumerate(mentaiko_count) if x == max(mentaiko_count) and x != 0]
if kiseki == []:
    print(0)
else:
    print(*kiseki, sep="\n")