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1. Read the competition introduction and data description carefully;一个大雨滂沱夜晚某小县城环卫工人雷敬德兴冲冲地赶往医院迎接即将出世儿子路边见到一个被遗弃女婴捡起孩子孩子止住哭对一笑这一笑就此改变了敬德一生面对敬德微薄工资妻子淑琴对同时抚养两个孩子一筹莫展几次设法送走女孩又被敬德带回家里敬德决定收养女孩起名媛媛五岁媛媛尚不会讲话敬德到处为求医一日敬德家里不慎着火敬德一心顾念不会喊叫媛媛忽略了儿子小超使小超被烫伤淑琴对此大为不满二人矛盾更加激化回到北京娘家并与敬德离了婚媛媛敬德关爱下长大医院护士欧阳钦佩敬德为人经常帮助既当爹又当妈敬德两人互有好感媛媛不知敬德和淑琴已离异一直希望全家团聚极力反对敬德和欧阳感情发展敬德只能疏远欧阳欧阳无奈参加了巡回医疗队当媛媛偷偷跑回北京想劝说淑琴妈妈回家时才知道淑琴已经结婚去了国外而且自己也不敬德亲生女儿……而此时又传来了欧阳为救病人而丧生噩耗媛媛自责不已发誓要一辈子照顾好父亲……9-3 User: Create a class named User, which contains the attributes first_name and last_name, as well as several other attributes that the user profile usually stores. Define a method named describe_user () in the class User, which prints a summary of user information; Then define a method called greet_user (), which sends personalized greetings to users.If an attacker sends a large number of SYN requests with fake source addresses, the server side will consume a lot of resources to handle this semi-connection, and saving traversal will consume a lot of CPU time and memory, not to mention retrying SYN + ACK on IP in this list. TCP is a reliable protocol, and messages will be retransmitted at this time. The default number of retries is 5. The interval time of retries is doubled from 1s to 1s + 2s + 4s + 8s + 16s = 31s respectively. After the fifth time is sent out, it will take 32s to know that the fifth time has timed out, so the total is 31 + 32=63s.You BPU Break Armor Belt Critical StrikeClick "Detailed List" to enter the following figure:13