import sys input=sys.stdin.readline def I(): return int(input()) def MI(): return map(int, input().split()) def LI(): return list(map(int, input().split())) def main(): import bisect N=I() A=LI() B=LI() def calc(c): temp=0 x=A[c] for i in range(N): temp+=B[i]*abs(x-A[i]) return temp M=10**6+5 left=0 right=N-1 for i in range(500): c1=(2*left+right)/3 c2=(left+2*right)/3 c1=int(c1) c2=int(c2) if calc(c1)