线性求逆元
https://leetcode.com/problems/count-the-number-of-good-subsequences/description/ 求[1,n]的所有数逆元在模p下的逆元, 用pow(n,p – 2,p)太慢了。所有用下面代码
https://leetcode.com/problems/count-the-number-of-good-subsequences/description/ 求[1,n]的所有数逆元在模p下的逆元, 用pow(n,p – 2,p)太慢了。所有用下面代码
多米诺题,找规律.