大概做法是这样的 考虑最朴素的做法,预处理出1到所有点的最短路数组dis1和方案数数组cnt1,和预处理出n到所有点的最短路数组dis2和方案数数组出cnt2,然后暴力枚举点对(A,B),如果A和B之间没有连边,那么就可以考虑添加一条正权边,满足这个条件就能添加dis1[A]+dis2[B]+1<=dis1[n],且cnt1[A]*cnt2[B]>=X,由于是要使方案增加,所以将边权设为dis1[n]-(dis1[A]+dis2[B])是最好的,因为可以继承原有的最短路方案数.那么由于(A,B…

第十章 What Is  the Value of All of This? entry条目 是由list表组成的 pair 对,pair 对的第一个list表是集合 set.另外,两个list表的长度必须是相同的.举出几个 entry条目 的例子. 例如((appetizer entree beverage) (pate boeuf vin)和((appetizer entree beverage) (beer beer beer))还有((beverage dessert) ((food i…

The .NET framework comes with a variety of different serializers. Hopefully, my overview of these serializers will have provided some insight into the differences between them and the various advantages and disadvantages of using different serializer…

Treasure Hunt IV Time Limit: 2 Seconds      Memory Limit: 65536 KB Alice is exploring the wonderland, suddenly she fell into a hole, when she woke up, she found there are b - a + 1 treasures labled a from b in front of her.Alice was very excited but…

Description: Decode the message. You intercept the following message, which you know has been encoded using the modulus m = 956331992007843552652604425031376690367    and exponent    e = 12398737. Break the code and decipher the message. 821566670681…

Treasure Hunt IV Time Limit: 2 Seconds      Memory Limit: 65536 KB Alice is exploring the wonderland, suddenly she fell into a hole, when she woke up, she found there are b - a + 1 treasures labled a from b in front of her. Alice was very excited but…

1.词云图 词云图,也叫文字云,是对文本中出现频率较高的"关键词"予以视觉化的展现,词云图过滤掉大量的低频低质的文本信息,使得浏览者只要一眼扫过文本就可领略文本的主旨. 先看几个词云图 简书签约作者标签词云 全国政协常委会工作报告词云图 2.推荐几个不错的词云图工具 Tagul Tagul云可以自定义字体.词云的形状(有爱心.BUS.雪人.人像.UFO等),颜色等,做出来的词云图很酷炫,为网站访问者提供良好的用户体验.用户可以在网站做好词云图,然后印在衣服.杯子.鼠标垫等地方,自己设计…

生活英语读写MOOC-Literature Tutor-有声名著阅读推荐 1. Alice's Adventures in Wonderland 爱丽丝漫游奇境记 音频与文本下载地址:链接:http://pan.baidu.com/s/1kV0H4Ej密码:fs7g 2. The Adventures of Tom Sawyer 汤姆·索亚历险记 音频与文本下载地址:链接:https://pan.baidu.com/s/1i5yhcH3密码:ccab 3. The Adventures of H…

I always in the deepest despair, meet the most beautiful sunrise. 我总是在最深的绝望里遇见最美丽的惊喜. Some pessimists say that if you hope more, you may lose more. They always are accustomed to imagining the worst and they try to expect less to avoid being overtaken…

Try not to become a man of success but rather try to become a man of value. 不要努力去做一个成功的人,而要努力去做一个有价值的人. A man of success is also a man of vlaue. I want to be a man of success, in that process, my work will contribute a lot to the whole human being. E…