实现大整数的加减乘除四则运算。实现大整数的加减乘除四则运算-Large integer addition and subtraction, multiplication and division four operations. Large integer addition and subtraction, multiplication and division four operations

c++大整数模板，包含四则运算，求平分根，取模等常见运算，主要在ACM竞赛中.-c++ large integer template contains four operations, seeking split root, modulus and other common operations, mainly in the ACM contest