2020 MCM Weekend 2
Problem C: A Wealth of Data
In the online marketplace it created, Amazon provides customers with an opportunity to rate and
review purchases. Individual ratings - called “star ratings” – allow purchasers to express their
level of satisfaction with a product using a scale of 1 (low rated, low satisfaction) to 5 (highly
rated, high satisfaction). Additionally, customers can submit text-based messages – called
“reviews” – that express further opinions and information about the product. Other customers
can submit ratings on these reviews as being helpful or not – called a “helpfulness rating” –
towards assisting their own product purchasing decision. Companies use these data to gain
insights into the markets in which they participate, the timing of that participation, and the
potential success of product design feature choices.
2022-02-08 23:46:48
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《计算机网络自顶向下（第七版）》课后题答案
中英文版答案的汇总，涵盖了所有的题目，每一道题都有答案，大部分为中文答案，其余为英文答案，但能够保证包含所有题目答案。同时每道题都是题目+答案的格式，题目为英文题目，更有助于学习。
最后还夹带了中英文专有词汇对照表以及一些复习题。
资源不需要积分就能下载，麻烦点个关注，主页还有更多文章和资源。
2022-02-08 09:05:42
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pat算法题目python统计和统计图1帮助你分析训练策略，早日金榜题名
2022-02-06 09:05:44
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《算法笔记》6.3小节——C++标准模板库(STL)介绍->string的常见用法详解A字符串处理题目编号1983全部测试样例和输出样例：
题目描述：
读入两个字符串，字符串除了数字还可能包括 '—'、'E'、'e'、'．'，相加之后输出结果，如果是浮点型，要求用科学计数法表示（最多包含10个有效数字）。
输入：
输入包含多组测试数据。
每组输入占两行，每行一个字符串，测试数据保证字符串的构成严格按照题目中的描述。
输出：
输出两个数字相加的结果，每组输出占一行。
2022-02-02 14:03:35
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