import copy
Na = int(input())
lsW1 = list(map(int,input().split()))
lsW1.sort()
lsW = copy.copy(lsW1)
Nb = int(input())
lsB1 = list(map(int,input().split()))
lsB1.sort()
lsB = copy.copy(lsB1)

cnt1 = 1
now = lsW.pop()
while True:
    if cnt1 % 2 == 1:
        if not lsB:
            break
        if now > lsB[-1]:
            cnt1 += 1
            now = lsB.pop()
        else:
            lsB.pop()
    if cnt1 % 2 == 0:
        if not lsW:
            break
        if now > lsW[-1]:
            cnt1 += 1
            now = lsW.pop()
        else:
            lsW.pop()

lsW = copy.copy(lsW1)
lsB = copy.copy(lsB1)
cnt2 = 1
now = lsB.pop()
while True:
    if cnt2 % 2 == 1:
        if not lsW:
            break
        if now > lsW[-1]:
            cnt2 += 1
            now = lsW.pop()
        else:
            lsW.pop()
    if cnt2 % 2 == 0:
        if not lsB:
            break
        if now > lsB[-1]:
            cnt2 += 1
            now = lsB.pop()
        else:
            lsB.pop()
print(max(cnt1,cnt2))