The Context class is a context class, and Plus and Minus are implementations for calculation respectively. The code is as follows:
When introducing the competition plan and relevant rules for the second season, Shi Fan, chief director of Charming China City, said that the second season would increase innovation in an all-round way and stress three elements: first, it would emphasize the integration and creation of culture + tourism + city brand; Second, this year more emphasis has been placed on the harmonious relationship between people and cities. Third, the city's profound cultural heritage will be deeply explored again.
Wonder乐园的常务具瑞镇虽然是有财有势的富三代，但是他是一个不喝酒，不赌博，不开车、不运动、不外宿、不外出、不恋爱、不结婚的人物，因童年时代经历恐怖意外留下创伤，形成心理缺陷，至遇上性格开朗活泼的张荷娜敞开其心扉 。
However-the moment your hand touched the card, the huge and dazzling light drowned you in an instant. When you came back to absolute being, you were already in a black space.
Let's look at a code example first:
抗日战争时期，河北冀中柳林镇的庄家营村，残暴的驻柳林镇日军，为抓捕八路军伤员，血洗了庄家营村，杀害了全村男女老幼共计200余人。幸免于难的屠户庄继宗，与同样对鬼子满怀深仇大恨的杂耍班主李占魁结成兄弟，秘密潜入柳林镇。
20岁的刘奕东是个高中毕业的叛逆少女，她母亲兰姐和她继父离婚后， 搬来与她同住，两人因为她爸的死而关系紧张。26岁的张建是个木讷老 实的房产中介，业绩不好常被欺负，他并不适应北京的高压和快节奏生活，女友也离他而去。称自己23岁的秦芸娟是一名KTV陪唱女，她陪唱不陪睡，辛苦周旋在客人、同事和KTV经理之间，最大的愿望是把儿子接来身边。27岁的唐小柔没有主业，倚靠网络直播赚钱，她17岁曾拍过一本知名杂志的封面，从此认定自己是做明星的料，可是7年过去，她还只是个小透明，每天忙碌于各种试镜活动，存着一笔整容基金，做着明星梦。
清晨的一声枪响，打破紫藤社区长期以来的安宁。Mary Alice Young（Brenda Strong 饰）在家中自杀身亡。故事以她叙述的口吻开始，死后的Mary开始环顾四周关心自己邻居的生活：Susan（泰瑞·海切尔 Teri Hatcher 饰）是一个儿童文学作家，对男人毫无抗拒能力，丈夫因为出轨而被Susan提出离婚，有一个正值青春期的15岁女儿Julie。Lynette（菲丽西提·霍夫曼 Felicity Huffman 饰）是个标准的女强人，为了谁成为照顾家中四个幼儿的人而和丈夫约法三章时起冲突。Bree（玛西亚·克劳斯 Marcia Cross 饰）则是个完美主妇，她对自己的一言一行都要求甚高，却总是忽略了丈夫以及儿女对爱的需要，她很优雅，却冷冰冰。而性感的Gabrielle（艾娃·朗格利亚 Eva Longoria 饰）则有着富有又懂情趣的丈夫Calos，但总是禁受不住诱惑而偷情和重视物质享受的她也有着自己不为人知的过往。
A brilliant scientist is plucked out of the company lab and sent to India to sell the genetically modified rice she created - which she doesn't realize will destroy the farmers she thinks she's helping.
2. Use data to make an animation.
Action: I took it over and tried my hand. Then I opened it and said, "Grandpa, you are really warm-hearted, but I don't know you. How do you know that I am the person on the express, and where my home is... By the way, what does the person who asked you for help think? I forgot earlier, this excuse is too low."
[WeChat] Two WeChat are online at the same time, one is a strong man in the workplace and one is a literary youth.
If the spam sent by CSRF still has worm links, those friends who receive these harmful information will become the spread of harmful information in case they open the connection in the private letter, thus tens of thousands of users will be stolen and planted Trojan horses. The application of the whole website may collapse in an instant, with users complaining, users losing, the company's reputation plummeting and even facing bankruptcy. Once on MSN, Samy, a 19-year-old American boy, used CSS's Background vulnerability to successfully infect more than 1 million users with his worm within a few hours. Although the worm did not destroy the entire application, it only added "Samy is my idol" after each user's signature, but once these vulnerabilities were exploited by malicious users, the consequences would be unimaginable, and the same thing happened on Sina Weibo.
北方统一南方似乎是大势所趋，现在自己这算不算逆天而行？当然了，也是有成功个例的，比如明朝。
The soldier who flushed him later blamed himself. I also advised the young man that there was no way out. No one wanted to do this, but there was really no way out. "
《舞蹈风暴 竖屏直拍版》是《舞蹈风暴》的会员衍生节目，以竖屏的形式展示了各位舞者的精彩瞬间。大型舞蹈创编竞技节目《舞蹈风暴》，是一档重建造星秩序，定义青年偶像价值的热血舞蹈综艺，即将引爆2019的最强舞蹈模式
The UGC and PGC modes rely on the output of users, so the advantage is that there is a lot of room for expansion of output and interest points, and the content output by users is easier to meet the needs of users. However, the quality cannot be guaranteed, requiring manpower review or intervention sequencing, and there is no way to control the timeliness greatly.
