直接引入 可以像int一样操作

跟Java里的好像

但好用多了

而且是加速版的，比用字符串写的还快(用vector<int>)

还附了些奇怪的函式

有兴趣自己写BigNumber的人可以参考看看

-Can be directly introduced to operate with the same as int in Java but it seems the more useful it is to speed up version of, than to write the string faster (with vector <int> ) Is also included in some strange interest in the function to write their own reference BigNumber can look at the