N=int(input())
A=list(map(int,input().split()))
B=list(map(int,input().split()))
A.sort()
B.sort(reverse=True)
x=0
y=0
for i in range(N):
  if A[i]>B[i]:
    x+=1
  else:
    y+=1
w=1
result=1
mod=998244353
for z in range(1,x+1):
  w*=z
  w%=mod
result*=w
result%=mod
w=1
for z in range(1,y+1):
  w*=z
  w%=mod
result*=w
result%=mod
print(result)