N = int(input())
A = []
B = []
for _ in range(N):
    a, b = map(int, input().split())
    A.append(a)
    B.append(b)

M = int(input())
X = []
Y = []
for _ in range(M):
    x, y = map(int, input().split())
    X.append(x)
    Y.append(y)

ans = [0] * M
for i in range(N):
    for j in range(M):
        if A[i] >= X[j] and B[i] <= Y[j]:
            ans[j] += 1

max_n = max(ans)
if max_n > 0:
    [print(i + 1) for i, n in enumerate(ans) if n == max_n]
else:
    print(0)