Description Write a program to complete the following command: new id - create a specified sequence of Numbers for id (id < 200000) Add id num - to join the sequence of Numbers for id integer num merge id1 id2 - merger sequence number of id1 and id2, and make id2 empty unique id - remove repetitive element in the sequence id out id - from small to large, output the elements of sequence of Numbers for ids separated by Spaces Input The First Line is n which mean the number of the Command (n <= 200000). The next n lines are correct Command. You don't have to worry wrong input and id is int. Output Then output according the requirements. Sample Input 16 new 1 new 2 add 1 1 add 1 2 add 1 3 add 2 1 add 2 2 add 2 3 add 2 4 out 1 out 2 merge 1 2 out 1 out 2 unique 1 out 1 ​ Sample Ouput 1 2 3 1 2 3 4 1 1 2 2 3 3 4 1 2 3 4 1 2 3 1 2 3 4 1 1 2 2 3 3 4 1 2 3 4

以下是 Python 代码实现：

n = int(input())
seqs = {}

for i in range(n):
    cmd = input().split()
    if cmd[0] == "new":
        id = int(cmd[1])
        seqs[id] = []
    elif cmd[0] == "add":
        id = int(cmd[1])
        num = int(cmd[2])
        seqs[id].append(num)
    elif cmd[0] == "merge":
        id1 = int(cmd[1])
        id2 = int(cmd[2])
        seqs[id1] += seqs[id2]
        seqs[id2] = []
    elif cmd[0] == "unique":
        id = int(cmd[1])
        seqs[id] = list(set(seqs[id]))
    elif cmd[0] == "out":
        id = int(cmd[1])
        seqs[id].sort()
        print(" ".join([str(num) for num in seqs[id]]))

首先读入命令数量 n，然后使用一个字典 seqs 来存储每个序列对应的元素序列。对于每个命令，根据命令的不同进行相应的操作。

对于 "new" 命令，直接在 seqs 中创建一个空列表来表示新的序列。

对于 "add" 命令，将指定元素添加到对应序列的末尾。

对于 "merge" 命令，将两个序列合并，并将右侧序列清空。

对于 "unique" 命令，将对应序列去重。

对于 "out" 命令，先将对应序列排序，然后输出序列中的元素，用空格隔开。

注意，在输出时需要将元素转换为字符串类型，否则会出现类型错误。