import sys
from bisect import bisect_left, bisect_right

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

N = int(readline())
A = int(readline())
B0 = list(map(int, readline().split()))
C = int(readline())
D0 = list(map(int, readline().split()))

B0.sort()
D0.sort()

def game():
    B = []
    D = []
    for _ in range(N):
        if not B:
            B += B0
        if not D:
            D += D0
        if len(B) <= len(D):
            x = B.pop()
            i = bisect_left(D, x)
            y = D.pop(i - 1)
            yield x, y
        else:
            y = D.pop(0)
            i = bisect_right(B, y)
            if i == len(B):
                x = B.pop()
            else:
                x = B.pop(i)
            yield x, y

answer = sum(x > y for x, y in game())
print(answer)