题解 | #整型数组合并#

# -*-coding:utf-8-*-
while True:
    try:
        input_m1 = int(input())
        input_n1 = list(map(int,input().split(" ")))
        input_m2 = int(input())
        input_n2 = list(map(int,input().split(" ")))
        input_nn = input_n1+input_n2
        input_nn_s = sorted(set(input_nn),reverse=False)

        print("".join(list(map(str,input_nn_s))))



    except:
        break