区间树上的查找算法，要求先输入若干区间用来构造红黑树，之后再向树中输入一个查找区间，输出上述区间在树中的重叠区间。需要在红黑树插入操作的基础上进行完成。-Interval tree search algorithm, asked to enter the number of intervals used to construct the red-black tree after tree again enter a search range, the output of the interval