import heapq hq=[] n=int(input());ans=0 for i in list(map(int,input().split())): ans+=i heapq.heappush(hq,-i) input() for i in list(map(int,input().split())): while -hq[0]>=i: q=heapq.heappop(hq) ans+=q;q=(-q)%i ans+=q;heapq.heappush(hq,-q) print(ans)