巨型整数类 用C++编写 很好的代码哦 本人做滴作业 拿来共享 -Large integer type used to prepare a very good C++ code Oh I used to do the sharing drop operation吼吼

巨型整数类，可以执行对超出long long范围的巨型整数的运算，多种构造方式，经大量数据测试无bug。(The giant integer class can perform operations on large integers over the long long range, multiple construction methods, and a large number of data tests without bug.)