from collections import defaultdict
n=int(input())
A=list(map(int,input().split()))
B=list(map(int,input().split()))
A.sort(reverse=1)
D=defaultdict(int)
for e in B:
	D[e]+=1
x=0
for _ in range(D["add"]):
	x+=A.pop()
for _ in range(D["max"]):
	x=max(x,A.pop())
for _ in range(D["min"]):
	x=min(x,A.pop())
print(x)