10871

import sys
sys.stdin = open("input.txt","rt")

a,b = map(int, sys.stdin.readline().split())

lists = list(map(int, sys.stdin.readline().split()))


for i in range(a):

    if lists[i] < b:
        print(lists[i], end = " ")

# 거꾸로 출력

import sys
sys.stdin = open("input.txt","rt")

a,b = map(int, sys.stdin.readline().split())
lists = list(map(int, sys.stdin.readline().split()))

a = a-1
while a >= 0:

    if b > lists[a]:
        print(lists[a], end = " ")

    a -= 1