有理数逆元板子

template <int M = 1000000007> struct rational{ ll p, q; rational(ll p = 0, ll q = 1):p(p), q(q){} rational operator + (const rational &rhs) const{ ret
posted @ 2022-11-10 03:59  tiany7  阅读(20)  评论(0)  编辑  收藏  举报