N = int(input())

AB = [list(map(int, input().split())) for i in range(N)]

M = int(input())

m = 1
ans = []
for i in range(M):
    x, y = map(int, input().split())
    z = 0
    for a, b in AB:
        if x <= a and y >= b:
            z += 1
    if m < z:
        m = z
        ans = [i + 1]
    elif m == z:
        ans += [i + 1]
if ans:
    print(*ans, sep='\n')
else:
    print(0)