protecteyesight的博客

It’s time to fight the local despots and redistribute the land. There is a rectangular piece of land granted from the government, whose length and width are both in binary form. As the mayor, you must

给你A,B，求A乘B。 A和B都有250位，那么结果最多500位，注意长度。 #include using namespace std; const int MAXN=9999; #define DLEN 4 const int NNN=1e4+10; class BigNum { private: int a[NNN]; int len; public: BigN