n, h, x = map(int,input().split())
G = int(input())
g = list(map(int,input().split()))
B = int(input())
b = list(map(int,input().split()))
score = [0] * n
for i in range(G): score[g[i]-1] = 1
for i in range(B): score[b[i]-1] = -1
dp = [[] for j in range(n+1)]
dp[0] = [10 ** 9] * 201
dp[0][100] = 0
for i in range(n):
	dp[i+1] = [10 ** 9] * 201
	for j in range(201):
		if not (0 <= j+score[i] <= 200): continue
		if i+1-x < 0:
			dp[i+1][j+score[i]] = dp[i][j]
		else:
			dp[i+1][j+score[i]] = min(dp[i+1-x][j]+1, dp[i][j])
	if i+1-x >= 0:
		dp[i+1-x] = []
ans = -200
for i in range(201):
	if dp[n][i] <= h:
		ans = max(ans, i - 100)

print(ans)