import numpy as np

N = input()

l1 = list(map(int,N.split(' ')))

main_list1 = [] main_list2 = [] for i in range(l1[0]): M = input() l2 = list(map(int,M.split(' '))) main_list1.append(l2)

for i in range(l1[1]): P = input() l3 = list(map(int,P.split(' '))) main_list2.append(l3)

main_list1 = np.array(main_list1) main_list2 = np.array(main_list2)

print(np.concatenate((main_list1,main_list2)))