The price of these digital currencies is even high than ripple

本文探讨了加密货币投资中两种不同表现的币种:Sphere(SPHR)与Polis(POLIS)。Sphere虽曾短暂飙升但很快回落,而Polis价格波动相对稳定,更适合长期持有。

For many people, the top currencies is considered an ideal investment, such as ripple bitcoin, ethereum.Indeed, those currencies ranking at top will give investors a sense of security of processing those currencies. Although many small currencies are growing rapidly, their prices are also satisfactory, but they are much less reliable for the owners.

 

Sphere is not a stranger in cryptocurrencies. Sphr is short for Sphere. For sphere coins, he ranks 562. Since 2015, he has been mediocre and unfocused. In 2017, the price of sphere rose suddenly and drawn peoples attention at that price rising period. However, the price of sphere fell sharply after the boom. Many people thought sphere was a very unstable currency, so they gave up their investment in sphr. In fact, sphere is not the first choice for conservative investors, because in January 2018, sphere again suddenly rose to $11.15, then quickly fell back to about $2. But the price is more attractive than the iota ico price, which is ranked in the top 10.


If sphere is an unstable currency, then polis is a relatively stable and surprising currency. In early January 2018, polis made a high-profile debut with a price of $55.16, which lasted for about 12 days, while the price fell again, but at a minimum of $30. At the end of January, the price of the polish began to continue to decline, until after the price to $5.17, the price back to the stable route, after the impact of the bear market, the price of the polis still stays in the $5.29. Polis was a bit cruel to the investors who started out, despite the risks of investing, but there was still very little currency in the short term. The good news is that the price and market value of polis are slowly rising after the fall, so polish is more suitable for long-term holding, and the risk of short-term trading is still very high.

本设计项目聚焦于一款面向城市环保领域的移动应用开发,该应用以微信小程序为载体,结合SpringBoot后端框架与MySQL数据库系统构建。项目成果涵盖完整源代码、数据库结构文档、开题报告、毕业论文及功能演示视频。在信息化进程加速的背景下,传统数据管理模式逐步向数字化、系统化方向演进。本应用旨在通过技术手段提升垃圾分类管理工作的效率,实现对海量环保数据的快速处理与整合,从而优化管理流程,增强事务执行效能。 技术上,前端界面采用VUE框架配合layui样式库进行构建,小程序端基于uni-app框架实现跨平台兼容;后端服务选用Java语言下的SpringBoot框架搭建,数据存储则依托关系型数据库MySQL。系统为管理员提供了包括用户管理、内容分类(如环保视频、知识、新闻、垃圾信息等)、论坛维护、试题与测试管理、轮播图配置等在内的综合管理功能。普通用户可通过微信小程序完成注册登录,浏览各类环保资讯、查询垃圾归类信息,并参与在线知识问答活动。 在设计与实现层面,该应用注重界面简洁性与操作逻辑的一致性,在满足基础功能需求的同时,也考虑了数据安全性与系统稳定性的解决方案。通过模块化设计与规范化数据处理,系统不仅提升了管理工作的整体效率,也推动了信息管理的结构化与自动化水平。整体而言,本项目体现了现代软件开发技术在环保领域的实际应用,为垃圾分类的推广与管理提供了可行的技术支撑。 资源来源于网络分享,仅用于学习交流使用,请勿用于商业,如有侵权请联系我删除!
SDUAlgorithms2025 Oct 15, 2025 Problem G. Currency Exchange Time Limit 1000 ms Mem Limit 30000 kB Several currency exchange points are working in our city. Let us suppose that each point specializes in two particular currencies and performs exchange operations only with these currencies. There can be several points specializing in the same pair of currencies. Each point has its own exchange rates, exchange rate of A to B is the quantity of B you get for 1A. Also each exchange point has some commission, the sum you have to pay for your exchange operation. Commission is always collected in source currency. For example, if you want to exchange 100 US Dollars into Russian Rubles at the exchange point, where the exchange rate is 29.75, and the commission is 0.39 you will get (100 0.39) * 29.75 = 2963.3975RUR. You surely know that there are N different currencies you can deal with in our city. Let us assign unique integer number from 1 to N to each currency. Then each exchange point can be described with 6 numbers: integer A and B - numbers of currencies it exchanges, and real RAB, CAB, RBA and CBA - exchange rates and commissions when exchanging A to B and B to A respectively. Nick has some money in currency S and wonders if he can somehow, after some exchange operations, increase his capital. Of course, he wants to have his money in currency S in the end. Help him to answer this difficult question. Nick must always have non-negative sum of money while making his operations. Input The first line of the input contains four numbers: N - the number of currencies, M - the number of exchange points, S - the number of currency Nick has and V - the quantity of currency units he has. The following M lines contain 6 numbers each - the description of the corresponding exchange point - in specified above order. Numbers are separated by one or more spaces. 1<=S<=N<=100, 1<=M<=100, V is real number, 0<=V<=103. For each point exchange rates and commissions are real, given with at most two digits after the decimal point, 10-2<=rate<=102, 0<=commission<=102. Let us call some sequence of the exchange operations simple if no exchange point is used more than once in this sequence. You may assume that ratio of the numeric values of the sums at the end and at the beginning of any simple sequence of the exchange operations will be less than 104. SDUAlgorithms2025 Oct 15, 2025 Output If Nick can increase his wealth, output YES, in other case output NO to the output file. Sample Input 3 2 1 20.0 1 2 1.00 1.00 1.00 1.00 2 3 1.10 1.00 1.10 1.00 Output YES
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