摘要： 推荐博客： https://blog.csdn.net/dingchenxixi/article/details/52459001 抽屉原理的一种更一般的表述为：“把多于kn个东西任意分放进n个空抽屉（k是正整数），那么一定有一个抽屉中放进了至少k+1个东西。 利用上述原理容易证明：“任意7个整数中 阅读全文

摘要： Here is a famous story in Chinese history. That was about 2300 years ago. General Tian Ji was a high official in the country Qi. He likes to play hors 阅读全文