写一个程序完成以下命令： new id ——新建一个指定编号为id的序列(id<10000) add id num——向编号为id的序列加入整数num merge id1 id2——合并序列id1和id2中的数，并将id2清空 unique id——去掉序列id中重复的元素 每行输出的末尾没有空格

以下是 Python3 的实现代码：

class Sequence:
    def __init__(self):
        self.sequences = {}

    def new(self, id):
        if id not in self.sequences and id < 10000:
            self.sequences[id] = []
            print("Succeeded")
        else:
            print("Failed")

    def add(self, id, num):
        if id in self.sequences:
            self.sequences[id].append(num)
            print("Succeeded")
        else:
            print("Failed")

    def merge(self, id1, id2):
        if id1 in self.sequences and id2 in self.sequences:
            self.sequences[id1] += self.sequences[id2]
            self.sequences[id2] = []
            print("Succeeded")
        else:
            print("Failed")

    def unique(self, id):
        if id in self.sequences:
            self.sequences[id] = list(set(self.sequences[id]))
            print("Succeeded")
        else:
            print("Failed")

sequence = Sequence()

while True:
    try:
        command = input().split()
        if command[0] == "new":
            sequence.new(int(command[1]))
        elif command[0] == "add":
            sequence.add(int(command[1]), int(command[2]))
        elif command[0] == "merge":
            sequence.merge(int(command[1]), int(command[2]))
        elif command[0] == "unique":
            sequence.unique(int(command[1]))
    except:
        break

使用时，输入命令即可。例如，输入

new 1
add 1 1
add 1 2
unique 1
merge 2 3

输出结果为：

Succeeded
Succeeded
Succeeded
Succeeded
Failed