6) array error with sort(reverse = true)

You are given with two arrays. Your task is to merge the array such that first array is in ascending order and second one in descending order.

Input Description:
First line contains two integer ‘n’ and ‘m’. ‘n’ denotes length of array 1 and ‘m’ of array 2.Next line contains n space separated numbers and third line contains ‘m’ space separated numbers

Output Description:
Print a single array in desired order

Sample Input :
3 3
23 15 16
357 65 10

Sample Output :
15 16 23 357 65 10

my code is:

n, m = input().split()

N = input().split()

M = input().split()

N.sort()

M.sort(reverse=True)

L = N + M

print(L)

ERROR:

but it is printing merged second list as

['15', '16', '23', '65', '357', '10']

kindly give a correct syntax so that second list is in descending order