Imagine that you are in a building that has exactly n floors. You can move between the floors in a lift. Let’s number the floors from bottom to top with intege...

A data stream is a real-time, continuous, ordered sequence of items. Some examples include sensor data, Internet traffic, financial tickers, on-line auctions, a...

差异表达分析工作流程的第一步是计数标准化，这是对样本间基因表达进行准确比较所必需的。

思路：将函数调用的参数和结果使用json序列化后保存到表中效果

1000. 数字反转 Time Limit: 1sec Memory Limit:256MB

题目一小明是个急性子，上小学的时候经常把老师写在黑板上的题目抄错了。有一次，老师出的题目是：36 x 495 = ? 他却给抄成了：396 x 45 = ? 但结果却很戏剧性，他的答案竟然是对的！！...

You are given four integers A, B, C, and D. Find the number of integers between A and B (inclusive) that can be evenly divided by neither C nor D.

Takahashi is standing on a multiplication table with infinitely many rows and columns.

Input is given from Standard Input in the following format:

唯一了解完题意，几分钟做出来的题，不要觉得水平提高了，是这道题太水了，想明白了，分分钟搞定！